Item Description: Specifications: Pressure gauge with rubber protection Pressure gauge Diameter: 75mm Test pressure : max 21 bar / 300 psi 4 Adapters : M10x1.0mm M12x1.25mm M14x1.25mm M18X1.5mm Hose Overall length: 430mm Pressure tube length : 150mm Angled pressure tube length : 160mm Case Size : 240 x 140 x 15.5mm 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 .