Specification: Model:520450 Name:Cylinder Leak Tester Group Main Material: Metal,plastic Measuring range: 0-100psi Fixed short connector : M12 Fixed long connector :M14 Hose total length:36cm Case:34*25*8cm Fit For: Test car engine cylinder sealability whether is within the scope of allow leakage,can also further from the failure phenomena to analysis and determine the location and causes of leakage in order to take measures to troubleshoot. Designed to detect a variety of common engine faults including: Worn piston rings, worn valves,cracks in cylinder walls and blown head gaskets.Available with either single gauge or twin gauge manifold. Gauge(s)show % of cylinder leakage or cylinder leakage and cylinder pressure .Suitable for use on any petrol engine with 14. 12 or 10mm spark plugs.Supplied in carry-case with instructions. Package Includes: 1 x Dual gauged Leak Detection Unit(Suitable for use on any petrol engine with 12mm or 14mm spark plugs) 1x Flexi Hose 1x Fixed short connector 1x Fixed long connector 1x Case