Features: This compression tester can be quickly set to your bike / car , then you can get accurate readings in valves , piston rings , cylinder bores or head gaskets . Manometer with double graduation ( 0 to 300 psi , 0- 21 kg / cm 2 ) and with rubber protection to prevent scratches Drain valve with full copper nickel plating, anti -oxidation and corrosion M10 adapter is suitable for motorcycles, M12 M14 M18 adapters are suitable for car. Specifications : 1-> Practical Cylinder Compression Tester for petrol engines 2-> Cylinder Compression Tester from 0-20 bar or 0-300 psi 3-> Cylinder Compression Tester with 2x Pressure Tubes with rubber nozzles 4-> Convenient Carry Case for Cylinder Compression Tester 5-> The Cylinder Compression Tester measures the piston pressure quick and easily, right underneath the spark plug thread 6-> Accurately check compression 7-> Suitable for petrol engine motorcycles and automotive vehicles 8-> Thread sizes: M18x1.5, M14x1.25, M12x1.25, M10x1.0 9-> Comes with specially designed molded case for storage 10-> Compact Design 11-> Easy to read gauge 12-> Dimension: 28.5 cm x 6.5 cm x 22.5 cm approx. Package Include: 1 x Cylinder Compression Tester from 0-21 bar or 0-300 psi 1 x Adapter M10 x 1.0 for Cylinder Compression Tester 1 x Adapter M12 x 1.25 for Cylinder Compression Tester 1 x Adapter M14 x 1.25 for Cylinder Compression Tester 1 x Adapter M18 x 1.5 for Cylinder Compression Tester 2 x Pressure Tubes with rubber nozzles for Cylinder Compression Tester 1 x Convenient Carry Case for Cylinder Compression Tester.