Test pressure and tightness with water or oil less than or equal too 860psi (60 bar). For plumbing, heating, solar system and sprinkler installations, for compressed air, steam and cooling systems, oil installations, for boiler and pressure vessel building. Double valve system for reliable pressure built-up, with rust-proof steel balls. High pumping capacity with long stroke, fine pressure adjustment at short pushes. High pressure hose with fabric ply prevents measurement errors. Robust, job-site proven metal design for tough use. Corrosion resistant, powder coated sheet metal reservoir for 3 Gallons (12 liters)of fluid content. Distortion resistant lever with ergonomic handle, doubles as carrying handle when locked. Wear resistant pressure piston in brass. 5 foot (1.5 meter) High-pressure hose with 1/2" NPT connection.