Sealey Cylinder Leakage Tester 2-Gauge Petrol Engine Fault Test Kit Head Gasket Designed to detect a variety of common engine faults including: worn piston rings, worn valves, cylinder head cracks and blown head gaskets. Twin gauge manifold shows percentage of cylinder leakage and cylinder pressure. Suitable for use on any petrol engine with 10, 12 or 14mm spark plugs. Supplied in storage case with instructions. For spark plugs fitted into a deep recess, VS200/A – Long Reach Compression Tester Adaptor may be required.Specification: Model No VSE2020 Application(s): Spark Plugs; 10, 12, 14mm Brand: Sealey Contents: Gauges (x2) Nett Weight: 1.78kg Reading: Cylinder Leakage %, Cylinder Pressure psi/bar Product Guarantee: 1 YearCatalogue Page: Page 429