Item Name: Compressometer Tool Compression Tester Kit Compression Leakage Tester. 3" Gauge has dual color scale with 0-300 PSI, 0-20 kPaFittings: M10, M12, M14, M18 (Male, With "O" Ring)Adapters for a wide number of vehiclesGauge will hold pressure s and has quick push button release valveIncludes 2 rubber cones ends for quick check (no need to thread into head)Includes 14mm and 18mm adaptersPackage Include:Petrol Engine Pressure Gauge Tester Kit SetNote:1.Please allow 1-2cm error due to manual measurement.