Special promotions are available! Don't miss out on great deals!
Head gasket tester kit
Product code: CKBA4052
Brand: Castex
- Budapest: 0
- Debrecen: 2
- Debrecen II: 0
Product description
Product description
Thanks to the universal adapter with a wide measuring range (25-55mm), we can check among other things: cars, trucks, road tractors, excavators, motorcycles and forklifts.
The RELD tester is designed to detect damage to the cylinder head and gasket of combustion, liquid-cooled engines (petrol, diesel, LPG). The tester has the same working principle and the same efficiency as expensive testers and its price is affordable thanks to the innovative method of production.
In case of a damaged gasket under the cylinder head or the cylinder head itself, a part of the exhaust gas containing CO2 enters the cooling system. The operating principle of the device is based on measuring the CO2 content. With an increased content of CO2, the liquid reacts with the gas and changes colour. The whole process takes only 5 minutes. Our tester offers almost 100% safety.
Contains
- Test tube
- Bayonet adapter (diameters: 40, 47, 55mm)
- 200ml round bottle
- 250ml square bottle
The product does not contain liquid!
Instructions
RELD reagent liquid is blue:
- If the liquid has not changed colour and remains blue - it means that the gasket under the cylinder head and the cylinder head are in perfect condition.
RELD reagent liquid is yellow or green:
- If the liquid has changed colour from blue to yellow or green - it means that the gasket under the cylinder head or the cylinder head is damaged.
Product packing
| Pack number | Dimensions | Weight |
|---|---|---|
| 1 | 42 x 27 x 9 cm | 1.45 kg |
Delivery fee
| Delivery method | Gross price |
|---|---|
| Pickup in Nagytarcsa | 0,00 € |
| Pickup in Debrecen | 0,00 € |
| DHL Worldwide Express | 72,56 € |
Available accessories
Combustion leak tester fluid
Combustion leak tester fluid
Product code: JBM14563
Alternative products
Leak tester for cylinder head gasket
CO2 Combustion leak detect. This tool is designed to check for the leaks between combustion and cooling system of water-cooled engines. With 3 adapters.
Product code: JBM53662
Leak tester for cylinder head gasket
CO2 Combustion leak detect. This tool is designed to check for the leaks between combustion and cooling system of water-cooled engines. With 3 adapters.
Product code: MG04A4052
More products in this category
3” Piston Ring Compressor
A 3" piston ring compressor is essential when it comes to engine repair. It can be used to connect the piston with rings, and also helps to secure the piston to the engine body. Allows pistons to be assembled without damaging the piston rings.
Product code: MG04A1001
VW Crankshaft Sealing Flange Removing and Installing Tool (Petrol)
This crankshaft seal installer tool is designed for Volkswagen, Audi, Skoda 16v 1,4, 1,6 engines and it’s also used on Fiat BAG 1,6 engines.
Product code: MG04A1026
Piston ring groove cleaning tool set, 7 pcs
Quickly and reliably removes soot deposits from the groove. It has easily replaceable blades.
Product code: MG04A1040
4“ Piston Ring Compressor
A 4" piston ring compressor is essential when it comes to engine repair. It can be used to connect the piston with rings, and also helps to secure the piston to the engine body. Allows pistons to be assembled without damaging the piston rings.
Product code: MG04A1042
2“ PISTON RING COMPRESSOR
A piston ring compressor is essential when it comes to engine repair. It can be used to connect the piston with rings, and also helps to secure the piston to the engine body. Allows pistons to be assembled without damaging the piston rings.
Product code: MG04A1049
Stretch belt tool set, 2pcs
A universal tool set for installing tension belts on modern vehicles, which does not damage the belt or the pulley.
Product code: MG04A2313
Leak tester for cylinder head gasket
CO2 Combustion leak detect. This tool is designed to check for the leaks between combustion and cooling system of water-cooled engines. With 3 adapters.
Product code: MG04A4052
Ignition coils puller set
Ignition coils puller set, VW: Bora, Golf, new Beetle, Passat Polo, Touran, Luppo, Phaeton, Sharan, Tuareg, T5
Product code: MG50144
Piston ring pliers, 40-100mm
Designed for installing and removing piston rings. The jaws are designed to protect the piston ring from damage.
Product code: MG50335A
Piston ring pliers, 80-120mm
Designed for installing and removing piston rings. The jaws are designed to protect the piston ring from damage.
Product code: MG50335B
Piston ring pliers, 110-160mm
Designed for installing and removing piston rings. The jaws are designed to protect the piston ring from damage.
Product code: MG50335C
Timing belt tension meter
A two-sided scale allows measurements to be made from either side, showing the tension in Nm
Product code: MG50607
Piston ring service tool set, 9pcs
This 9-piece piston ring service tool set simplifies engine maintenance, featuring 3 piston compressors, a ring expander, groove cleaner, and a master kit. Fits diameters 53-175mm.
Product code: MG50608
Engine cylinder bore dial gauge set
Precision bore gauge set for measuring internal diameters from 50mm to 160mm with 0.01mm tolerance. Includes self-centering heads, 12 rods, spacer rings, and a durable case.
Product code: MG90130
Universal pulley and fan clutch holder set
This tool kit designed with grooved pins that hold the camshaft pulley firmly in place.
Product code: MG91630
Stretch belt removal and installation tool set, 5pcs
This tool set is designed for the precise removal and installation of elastic or automatic stretching belts found in modern auxiliary propulsion systems, including alternators and servo-steering systems. Suitable for use with a variety of vehicle brands including BMW, Chrysler, Citroen, Ford, Iveco, Mazda, Mercedes, Peugeot, Volvo, and Fiat, among others.
Product code: MG92944
Ignition coil puller tool for VAG engines
This Ignition Coil Puller is an indispensable tool designed for the proper removal of "pencil style" ignition coils on various VAG engines. It is specifically tailored for use with 4 cylinder 1.2, 1.4, 1.8, and 2.0 FSI/TFSI engines, making it a versatile tool for a wide range of applications.
Product code: MG96504
Fan clutch remover for BMW
BMW fan viscous clutch remover. Double-sided holding tool with a spacing of 38mm and 44.5mm.
Product code: W0676
Rear crankshaft oil seal replacement tool for Iveco 3.0, Mitsubishi Fuso 3.0 Euro 5
Rear crankshaft oil seal replacement tool for Iveco 3.0, Mitsubishi Fuso 3.0 Euro 5
Product code: W0619
Crankshaft rear oil seal replacement tool for Iveco, Fiat 2.3
Crankshaft rear oil seal (gearbox side) replacement tool for Iveco, Fiat 2.3
Product code: W0438
Front crankshaft oil seal puller for Iveco, Fiat 2.3
This tool is designed to extract the front oil seal safely and efficiently without causing damage to the seal or the crankshaft.
Product code: W0437
Crankshaft front oil seal puller for Iveco 3.0
The crankshaft front oil seal puller is a specialized tool designed to remove the front oil seal without causing damage to the crankshaft or engine components.
Product code: W0434
Face mill for crankshaft, VW TDI 1.9, 2.5
Face mill for the crankshafts of VW TDI 1.9, 2.5 engines.
Product code: W0017
Viscous clutch wrench Mercedes Sprinter 3.0 V6 CDI
Viscous clutch wrench for Mercedes Sprinter 3.0 V6 CDI, 4.0 V8 CDI, 642 3.0 CDI.
Product code: W0228
Rear crankshaft rear oil seal replacement tool for 3.0 HPI / HDI engines
Rear crankshaft rear oil seal replacement tool for Iveco, Fiat Ducato, Peugeot Boxer, Citroen Jumper 3.0 HPI / HDI engines.
Product code: C05/0202
Crankshaft rear oil seal replacement tool for Iveco, Fiat Ducato 2.3 engines
Replacement tool for crankshaft rear oil seal tool for Iveco, Fiat Ducato 2.3
Product code: C05/0216
Chain link splitter tool set
Specially curated for chain drives and timing chains, this kit is tailored to handle a range of chains (from 420 to 630) with unparalleled accuracy. Accommodating various pin sizes.
Product code: MG50095
Carburetor synchroniser and vacuum/pressure tester, 0-1bar
With this kit you can synchronize the values of up to 4 carburettors and fine tune and adjust them.
Product code: MG50504
Oxygen sensor socket set
This kit allows quick and damage-free replacement of lambda sensors, which are an important part of exhaust gas treatment systems. Different sizes and types of keys ensure that all lambda probe types are suitable, maximizing flexibility and applicability.
Product code: MG50627
Oxygen sensor socket 22mm, 3/8" square drive
This Oxygen Sensor Socket is a specialized tool designed for the removal and installation of oxygen sensors in vehicles equipped with computer-controlled engines. The built-in offset allows for more leverage on the socket in tight spaces by inserting a 3/8-inch square drive tool or breaker bar.
Product code: MG92571
Oxygen sensor wrench with flexible handle, 22mm
This Oxygen Sensor Wrench is designed for the efficient removal and installation of oxygen sensors.
Product code: MG92572
Oxygen sensor socket 22mm, 1/2" square drive
This Oxygen Sensor Socket is a specialized tool designed for the removal and installation of oxygen sensors in vehicles equipped with computer-controlled engines. The built-in offset allows for more leverage on the socket in tight spaces by inserting a 1/2-inch square drive tool or breaker bar.
Product code: MG92574
Torque angle gauge with magnetic arm
Torque angle gauge with magnetic arm is a special tool used to measure the angle of rotation during torque tightening operations.
Product code: MG04Z0018
Torque angle gauge
The torque angle meter is a special tool used to measure the angle of rotation during torque tightening operations.
Product code: MG04J1073
Diesel injector line socket flexi head wrench set (12-19mm)
Durable, flexible-head wrench set (12-19 mm) for diesel injectors, fuel lines, and hydraulics, with 220° flexibility and extra-long neck for hard-to-reach areas.
Product code: MG93374
Universal timing belt tensioner and remover
The Stretch Belt Mate Kit help install or remove stretch belts. Stretch belts can be difficult to install or remove without the proper tools. Improper installation or removal of a stretch belt can cause damage to the belt or other engine components.
Product code: MG04A2304
Cambelt tension wrench set, 14pcs
Cambelt tension wrench set with 13 interchangeable adapters, suitable for almost all types of vehicles.
Product code: MG04A2305
Lambda probe tester and simulator
The lambda probe tester and simulator tests zirconia and titania lambda sensors and the ECU (engine control unit, which monitors the parts necessary for the proper operation of internal combustion engines for proper performance). Designed to accommodate 1, 2, 3, and 4 wire sensors, both heated and unheated, this versatile device takes your automotive diagnostics to the next level.
Product code: MG04D7015
Vacuum and pressure gauge
Measuring range (pressure) 0.1bar, 14, 18mm coupling adapter
Product code: MG50190
Ribbed belt remover and installer tool set, universal
Effortlessly remove and install ribbed belts with our universal tool set. Includes two tools - one for installation and one for removal. Compatible with Alfa Romeo, Audi, BMW, Chrysler, Fiat, Ford, Mercedes, Seat, Skoda, Smart, PSA, Volvo, VW. Save time and money.
Product code: MG50370
Crankshaft seal removing and installing tool for VAG (2.5 diesel engines)
This tool is designed for the precise and safe removal and installation of the crankshaft seal on various VAG 2.5 diesel engines. It is an essential tool for mechanics and technicians working on compatible Volkswagen models, ensuring the correct alignment of the main seal housing and the crankshaft sensor.
Product code: MG97035
Stud extractor set, 4pcs
This four-piece stud extractor set is a highly efficient tool designed for the quick and easy removal and installation of hard-to-reach studs.
Product code: MG93264
Scraper Service Set
Scraper Service Set is a versatile tool kit designed for removing adhesives or paint from glass or metal surfaces.
Product code: MG04C1080
Universal camshaft pulley holding tool, 21-100mm
Universal camshaft pulley holding tool, 21-100mm. For Mercedes Benz, Bmw, Ford, Mitsubishi, Honda, VW, Audi, Nissan, Toyota, Volvo, etc.
Product code: W0132
Face mill cutter for Fiat 1.4 16V shafts
This face mill is specially designed for cutting and preparing Fiat 1.4 16V engine shafts. The cutting diameter of the tool is 32 mm, which is the ideal size for machining the front surface of Fiat 1.4 16V engine shafts. Thanks to the M12x1 thread size, it fits easily to shafts with the appropriate thread.
Product code: W0699
Viscous clutch key for Mercedes Sprinter 3.0 V6 CDI
The Viscous Clutch Key for Mercedes Sprinter 3.0 V6 CDI engines is a specialized tool designed to remove and install the viscous clutch in the cooling fan assembly. This key provides a secure grip on the clutch, allowing for efficient and safe maintenance or replacement of this critical component.
Product code: W0641
The viscous clutch key Volkswagen LT 2.5 TDI
The viscous clutch key Volkswagen LT 2.5 TDI is a specialized tool designed to assist in the removal and installation of the viscous clutch unit.
Product code: W0550
Timing belt tightener for VAG car engines
Timing belt tensioner wrench for VAG car engines.
Product code: W0039
Belt pulley wrench for BMW diesel engines
Belt pulley wrench for BMW diesel, E87, E46, E60, E61, E90, E91.
Product code: W0082
Intake manifold wrench for VAG, 3/8" 12 pt 13mm
13mm intake manifold wrench (3/8" drive), equivalent to VAG T10535, for VW Group 1.4L 3-cylinder diesel engines.
Product code: MG99605
Oil pump removal tool set for Range Rover Sport L494 diesel
Tool set for removing the oil pump on diesel Range Rover Sport L494 models.
Product code: MG95600
Fan wrench set, 5pcs
5-piece fan clutch wrench set for installation and removal of fan clutch components on various vehicle models.
Product code: MG95440
Universal belt tensioner wrench set
Double ended: 12, 13, 14, 15, 16, 17, 18, 19mm
Product code: MG50635B
Valve pressure spring installer and remover tool for BMW N-series and PSA 1.6T engines
Valve spring tool for BMW/Mini N-series and PSA 1.6T engines, works without removing the cylinder head.
Product code: MG98541
Universal camshaft bearing tool installation and removal set
Universal camshaft bearing tool set for easy installation and removal of camshaft bearings in various engine types.
Product code: MG91562
VAG crankshaft rear oil seal installer tool set
A professional toolset for correctly installing rear crankshaft oil seals on VAG engines (VW/Audi 1.8T, 2.0T, 3.0 V6, 3.2, 4.2L). Includes precision-machined guides and thrust pieces to ensure a damage-free and accurate seal installation.
Product code: MG98545
Car stethoscope
The car stethoscope is used for auscultation diagnosis. Eliminates sounds from other points than auscultated.
Product code: CHS-A1022
Piston ring compressor pliers
Piston ring compressor pliers. Operating range: 110-160mm.
Product code: CKB04082
Camshaft timing chain tensioner for Audi, VW, Seat
Camshaft timing chain tensioner. For Audi and VW 1.8L Turbo I4, 2.7L Bi-Turbo V6, 2.8L V6 and 4.2L V8 engines.
Product code: CKB10035
Head gasket tester kit
Head gasket tester kit. Allows easy diagnosis and quick detection of head gasket failures.
Product code: CKBA4052
Piston ring compressor 6"x90 to 175mm
Piston ring compressor 6"x90 to 175mm. Allows the assembly of pistons without damaging the piston rings.
Product code: G02622
Piston ring compressor tool set
Pliers are used to remove and install piston rings without the risk of damaging the components. Three bladed discs and a tool for cleaning the piston grooves from accumulated carbon deposits. The piston ring tensioning band helps to fit the piston into the cylinder.
Product code: G02623
Combustion leak tester fluid
Combustion leak tester fluid
Product code: JBM14563
Piston ring compressor 6", 60-175mm
6" piston ring compressor. Ø 60-175mm
Product code: JBM52697
Universal belt tensioner wrench set
Double ended: 12, 13, 14, 15, 16, 17, 18, 19mm
Product code: JBM52832
Piston ring compression set
Piston ring service tool set for install piston rings; 3 pcs piston ring plates/compressors; 1 piston ring expander; Piston ring groove cleaner; 3 blades
Product code: JBM53251
Leak tester for cylinder head gasket
CO2 Combustion leak detect. This tool is designed to check for the leaks between combustion and cooling system of water-cooled engines. With 3 adapters.
Product code: JBM53662
Lambda probe oxygen sensor socket set
Lambda (hot) end cap 22 mm x 50 mm, 1/2" square drive. Vacuum sensor and lambda probe (for low-seated probes) 22 mm x 30 mm, 3/8" square drive.
Product code: CKB02575
Ribbed belt remover and installer tool set, universal
Ribbed belt remover and installer tool set, for Alfa Romeo, Audi, BMW, Chrysler, Fiat, Ford, Mercedes, Seat, Skoda, Smart, PSA, Volvo, VW
Product code: JBM51927
Carburettor jet cleaning tool set, 16pcs
16-piece tool set for cleaning carburetor jets and welding nozzles, with brushes, needles, files, and storage box.
Product code: BGS-74438
Spark plug socket set hexagon, 12.5mm (1/2") drive, 14–21mm, 5pcs
5-piece spark plug socket set, 1/2" drive, sizes 14–21mm, includes rubber inlays and thin-walled socket for tight spaces.
Product code: BGS-6641
Exhaust gas temperature sensor special socket set (EGT / NOx), 6pcs
6-piece EGT/NOx sensor socket set, 13–17mm sizes in straight and offset design, for cars, vans, and trucks.
Product code: BGS-6678
Universal pulley fan clutch holder
Designed to remove and install fan clutch and rotate or restrain the camshaft pulley. Adjustable jaw spread and interchangeable pins.
Product code: CKB04049
Crankshaft seal installing tool for VAG (petrol and diesel engines)
Special purpose tool for the precise installation of shim rings/shim ring housings with a speed sensor on the rear (transmission side) side of the crankshaft.
Product code: MG04A1028
Rear crankshaft oil seal replacement tool for Iveco, Fiat, Citroen, Peugeot 3.0
Rear crankshaft oil seal replacement tool for Reinz, Erling, Glaser 13.65mm seals.
Product code: W0640
Ignition adjustment stroboscope lamp
This ignition adjustment stroboscope lamp is an important tool in car repair, especially for diagnosing and repairing problems related to the ignition system. A strobe light can be used to precisely adjust the mechanical or electronic glow system to match engine speed, resulting in greater fuel efficiency and improved performance.
Product code: MG04A6014
Adjustable camshaft pulley holder, length 420mm
For tensioning or loosening the belt pulleys, adjustable opening 12-150mm.
Product code: MG50673
Crankshaft rear oil seal replacement tool for Iveco, Fiat, Citroen, Peugeot 3.0
Crankshaft rear oil seal replacement tool for Iveco, Fiat, Citroen, Peugeot 3.0, 13x12.5 (Corteco, DT, LEMA, Ajusa)
Product code: W0522
Viscous Clutch Key Ford Transit 2.3 2.4 3.2 (2001 – 2006)
This viscous clutch key is specifically designed for tightening or loosening the viscous clutch on Ford Transit vehicles. It is an ideal tool for precise and efficient maintenance, ensuring the proper functioning of the clutch.
Product code: W0416
Water Pump Pulley Remover VW / AUDI
This tool is specifically designed for the removal of the water pump pulley during the timing belt replacement process.
Product code: W0328
Tool for fitting and removing stretch ribbed belts
This tool is a versatile and essential tool for fitting and removing stretch ribbed belts. This specialized tool is designed to simplify the process of working with stretch ribbed belts.
Product code: W0267
Viscous clutch wrench Mercedes Sprinter 906 218, 318, 418, 518 CDI
Viscous clutch wrench Mercedes Sprinter 906 218, 318, 418, 518 CDI
Product code: W0239
Universal camshaft pulley locking tool set, 4 pairs of bit adapters
Universal camshaft pulley locking tool set, 4 pairs of bit adapters.
Product code: W0238
Puller (32x1,25) To pull sprocket a chain and the sleeve damper crankshaft in the DKW SB 350, NZ 250, NZ 350, F8 other model
Product code: W426K
Crankshaft rear oil seal replacement tool for VW 1.4, 1.6, 2.0 TDI
Crankshaft rear oil seal replacement tool for VW, Seat, Skoda 1.4, 1.6, 2.0 TDI both petrol and diesel engines.
Product code: C05/0069
Face mill for VW, Seat, Skoda 1.9, 2.0, 2.4, 2.5, 3.3 V5, V6, V8 TDI, 5 guide pins
Face mill for VW, Seat, Skoda 1.9, 2.0, 2.4, 2.5, 3.3, V5, V6, V8, TDI injector seats. Includes 5 guide pins.
Product code: W0630
Variator wrench Audi A6 , A7 , A8 - 4.0 L TFSI
Variator wrench for Audi A6, A7, and A8 4.0L TFSI engines, designed for timing chain tensioning and precise adjustments during maintenance.
Product code: W0673
Face mill cutter for the shaft Porsche 911 G 2.7, 3.0 and 3.2
This face mill cutter is specifically designed for cutting and preparing Porsche 911 G 2.7, 3.0 and 3.2 engine shafts. Thanks to the M12x1.5 thread size, it fits easily on shafts with the appropriate thread.
Product code: W0672
Wrench for shaft belt pulley unscrewing, VW, Audi, Volvo
A special tool that can be used to unscrew the axle disc for VW, Audi and Volvo vehicles.
Product code: W0085
Wrench for loosening the shaft pulley Land Rover 2.0 TD, Rover 2.0 CDTi
The Wrench for loosening the shaft pulley is a specialized tool designed specifically for Land Rover 2.0 TD and Rover 2.0 CDTi engines.
Product code: W0690
Crankshaft rear oil seal replacement tool for VW 2.5 TDI engines
Crankshaft rear oil seal replacement tool for VW Crafter 5-cylinder diesel engines 2.5 TDI common rail (2006-2013).
Product code: C05/0084
Vacuum gauge and fuel pump pressure tester set with adapters
Measures vacuum up to 70cmHg and pressure up to 0.7bar. Fittings included for compatibility with most cars.
Product code: G02508
Electronic Stethoscope
Electronic stethoscope with 6-way amplifier and color-coded probes for efficient noise source detection in vehicles.
Product code: BGS-3531
Ignition coil extractor set for VAG, 4pcs
4-piece extractor set for VAG ignition coils, includes OEM-type tools T10094A, T10095A, T10166, and T40039 for safe removal on various engines.
Product code: BGS-68340
Tool tray 1/6: face hole nut wrench for truck rear axles
Adjustable face hole nut wrench for truck rear axles, includes 3 pin pairs and 50–100mm spigot range.
Product code: BGS-74338
V-ribbed belt tool set, 5pcs
5-piece tool set for mounting and dismounting stretchfit V-ribbed belts without tensioners, fits various pulley sizes.
Product code: BGS-70109
Ignition coil extractor set for VAG, 8pcs
8-piece VAG ignition coil extractor set for removing coils, connectors, and oil drain plugs; compatible with VW, Audi, Seat, Skoda engines.
Product code: BGS-70326
Mechanics Stethoscope, 320 mm
320mm mechanics stethoscope with steel tip for detecting faults in engines, bearings, and moving components.
Product code: BGS-3535
Tensioner Pulley Wrench Set, 12-point, special Shape, 13 - 19 mm, 5 pcs.
5-piece 12-point tensioner pulley wrench set, 13–19mm, chrome plated Cr-V steel, 460mm long, 2270g.
Product code: BGS-1314
Electronic Stethoscope
Electronic stethoscope for fast noise diagnosis in engine components, with comfortable padded headset.
Product code: BGS-3532
Cam belt tension gauge
The timing belt tension indicator can be used to adjust the timing belt movement in ranges of 1daN to 10daN.
Product code: CKB01597
Slide hammer oil seals extractor
Slide hammer tool for extracting hydraulic steering rack control valve oil seals, preventing pinion damage during power steering system repairs. Manufactured by MSG Equipment.
Product code: MS00005
Piston Ring Compressor Set
Complete tool set for piston ring cleaning, assembly, and compression. Includes tension bands, cleaner, pliers, and screwdriver.
Product code: BGS-1890
Ignition timing lamp
A strobe lamp for setting the ignition angle is used to check and adjust the ignition timing of gasoline engines.
Product code: CKB04795
Piston ring groove cleaning tool set 4pcs
For the removal of carbon deposits from piston ring grooves. Three six sided wheel cutters cover all standard size piston grooves.
Product code: CKBA1040
Piston ring compressor, 3"x125
Piston ring compressor, 3"x125. Allows the assembly of pistons without damaging the piston rings.
Product code: G02620
Piston ring compressor, 4"x90 - 175mm
Piston ring compressor, 4"x90 - 175mm. Allows the assembly of pistons without damaging the piston rings.
Product code: G02621
Piston ring compressor 3", 53-175mm
3" piston ring compressor. Ø 53/175mm
Product code: JBM52696
Carburettor testing kit
A kit for testing the fuel pump carburettor and automatic gearboxes. It is used for the synchronization of car and motorcycle carburettors, 2T and 4T.