Steelman Deluxe Cooling System Test Kit is used to perform cooling system pressure tests, testing all systems from 4 to 30 PSI. The professional-quality pressure pump is constructed of machined aluminum, brass, and stainless steel with a machined aluminum piston and chemically-resistant o-ring seals. The pump also features a large, 2" dial gauge with a rubber shock boot and includes an extra-long, 24" pressure hose assembly with a quick coupler connector and pressure relief valve for safety. This kit also includes a temperature probe, 4 conventional neck adapters, and 4 internally- and 4 externally-threaded, color-coded adapters, all housed in a high-impact, blow-molded case with additional storage.