Features 1. This compression tester can be quickly attached to your bike or car to provide accurate readings for valves, piston rings, cylinder bores, or head gaskets. 2. Manometer with double graduation (0 to 300 psi, 0-21 kg/cm²) and rubber protection to prevent scratches. 3. Drain valve with full copper nickel plating for anti-oxidation and corrosion resistance. 4. M10 adapter is suitable for motorcycles; M12, M14, and M18 adapters are suitable for cars. 5. Practical cylinder compression tester designed for petrol engines. Specifications - Practical cylinder compression tester for petrol engines - Measures pressure from 0-20 bar or 0-300 psi - Includes 2 pressure tubes with rubber nozzles - Comes with a convenient carry case - Measures piston pressure quickly and easily via the spark plug thread - Enables accurate compression testing - Suitable for petrol engine motorcycles and automotive vehicles - Thread sizes: M18x1.5, M14x1.25, M12x1.25, M10x1.0 - Features a specially designed molded case for storage - Compact design - Easy-to-read gauge - Dimensions: approximately 28.5 cm x 6.5 cm x 22.5 cm Package Includes: - 1 x Cylinder compression tester (0-21 bar or 0-300 psi) - 1 x M10 x 1.0 adapter - 1 x M12 x 1.25 adapter - 1 x M14 x 1.25 adapter - 1 x M18 x 1.5 adapter - 2 x Pressure tubes with rubber nozzles - 1 x Carry case