Comes complete with on-off safety valve to eliminate hose pressure when disconnecting from the cylinder. Can be used to check intake or exhaust valves, cracked or worn rings, defective cylinders, worn bushings, etc. Specifications: Orifice size is .060". precision gauges matched to within +/-2%. Includes 14MM Spark Plug Adapter, 24" pressure hose, and complete instructions. Factory calibrated. Letter of certification available upon request. ATS Pro Lifetime warranty
\r\nProtective form-fitted hard case included.\r\n
\r\nFor use with engines with bore diameters larger than 5" per AC43.13 REV 1B. For smaller engine bores, see p/n 2E.