Designed for complete compression testing on gasoline engines, including domestic, imports, motorcycles, marine, and small engines. Unique problem solving features for today's limited space engine compartments. Corrosion resistant nickel plated finish. Adapters work on both flat and tapered seat plugs. Professional quality gauge with zero adjust feature. Extra long 25" flex hose gauge assembly with quick coupler, allows easy viewing out of cluttered engine compartment. 2-1/2" gauge features chrome bezel and rugged protective outer boot. Dual scale gauge reads 0-300 psi and 0-2100 kPa. 12" flex-14 mm standard reach. 12" flex-14 mm long reach.