This item quickly and accurately checks compression. Compression tester IS fitted with 63mm gauge reading up to 300psi and 20kg/cm. The Kit includes 130mm straight and angled push-on connectors, 400mm flexible extension with 10, 12, 14 and 18mm adaptors. This universal kit is ideal for motorbikes, generators, mowers, outboards, cars, petrol 4x4 and petrol trucks. Supplied in a carry-case. Whether you are an amateur car enthusiast or a professional mechanic, this is an automotive compression test kit no automotive specialist should be without!