Raptor Blast 4000 PSI 7 GPM Pressure Washer Gun and 48" Wand and Couplers Safety-off trigger lock: brass internal parts Deluxe: Inlet: 3/8" Male Plug, Outlet: 1/4" female Maximums: 4000 PSI, 300 Degrees F, and 7 GPM Enables hose to enter pistol grip for easier handling 48" Wand Wands: Inlet: 1/4" NPT-M, Outlet: 1/4" Quick Connect for Nozzles