The General Pump TT951 is a TT Series 51 triplex plunger pump that comes standard with a 24mm solid shaft, ensuring this pump is suitable for pulley mount or direct drive with a flex coupler and bell housing. You can use this triplex plunger pump for all of your general cleaning applications. The TT951 pump has a forged brass manifold, solid ceramic plungers, Interpump unitized stainless steel K01 inlet and outlet valves, and a die cast, anodized aluminum oil bath crankcase with a capacity of 11.2 ounces. Specifications: This 11.2 lb. pressure washer pump has a maximum fluid temperature of 165 degrees F, a maximum inlet vacuum of 3' water, and 2.6 EBHP horsepower. The solid shaft diameter measures 0.945" (24mm).