The Torin 8 PCS Engine Cylinder Pressure Gauge contains： 1x spring buckle gauge, 1x straight rubber cone end adapter, 1x curved rubber cone end adapter. There are 16" long flexible extension hose with 4 sizes (10mm 12mm 14mm 18mm) selectable brass adapters in the engine compression test kit. The instrument panel with dual cells (0-300 psi, 0-21 kg/cm²) makes it easy to read. The acrylic glass instrument cover is equipped with a scratch-resistant coating and a protective rubber cover, giving it excellent vibration damping properties. Includes everything you need for a fast & effective compression pressure testing of petrol, gas, and fuel engine cylinders for most spark plug types on cars, trucks, motorcycles, marines, ATVs, UTVs, snowmobiles, boats, & more.