"This NorthStar spray gun features a pistol grip with 4-finger trigger Gun is rated for 4000 PSI, 300 F and 8 GPM. Brass fittings and parts. Trigger lock. 22mm quick coupler. Female Inlet in. M22 male, Female Outlet in. 1/4, GPM 8, Max. PSI 4,000, Max. Temperature F 300. Replacement parts are available through Northern Tool Parts Department 1-800-270-0810"