Hydraulic gear pump. 3.84 cubic inch displacement per revolution. 30 GPM @ 1800 RPM. 3650 PSI maximum operating pressure. 2000 RPM rated speed, 3000 RPM maximum speed. SAE B two bolt flange mount. #16 SAE inlet port with #12 SAE outlet port. 7/8" diameter keyed shaft. Left hand rotation (CCW clockwise). Aluminum housing with cast iron end plates.