4PCS Unique Compression Tester Kit (Petrol Engine) | Toptul JGAI0402

Use to check cylinder compression to assist in the diagnosis of faulty valves, piston rings, cylinder heads, gaskets and etc.
Large, shock protected, easy-reading 2-1/2" diameter gauge with dual calibration 0-300 psi, 0-21 kg/cm²
Gauge head with pressure relief valve for repeated test of cylinder without removing gauge
13" durable rubber extension hose with built in M14 adapter and one separate M18 adapter
8" heavy-duty aluminum extension tube with universal rubber cone adapter fits all plug holes