Use of a cordless drill for power keeps weight off this hydrostatic test pump, making it lightweight and portable. Included high pressure hose allows for filling the system and features quick disconnect. This 15 Ft. hose allows the pump to be set in a convenient location instead of being held next to the work site. DPHTP500 uses a 1/2 In. chuck on an electric or cordless drill 18 V or higher, capable of 1500 RPM (drill not included). These pumps are designed for pressure testing both residential and commercial water systems.