Description： -Maximum volume:5.6 gpm -Max. Discharge pressure: 3500 psi -Maximum pump speed: 1125/1450 rpm -Maximum inlet pressure: 125 psi -Maximum inlet vacuum: 9 ft. Water (7.9 in hg) -Bore: .787 in / 20 mm -Stroke: .630 in / 16 mm -Crankcase oil capacity: 40.6 oz -Maximum fluid temperature: 165 degrees fahrenheit -Inlet port thread: 1/2-14 bspp-f -Discharge port thread: 3/8-19 bspp-f -Shaft diameter: .945 in / 24 mm Package include： 1×General TS2021 Right Shaft 3500 PSI Pressure Washer Pump Notes： If you have any problem with the product you purchased, please contact us in time. .