"The Dynamic Fluid Components high pressure hydraulic gear pump features all aluminum construction and produces displacement of 0.24 cu. in./rev. Material Aluminum, Shaft Diameter in. 5/8, Weight lbs. 5.20, Max. PSI 3,650, Rotations Per Minute 3,600. Aluminium body with cast iron end plate construction Compact high-performance hydraulic gear pump with various applications including agriculture, turf markets, construction, mobile 0.24 cu in. rev 3650 PSI 3600 Max RPM SAE 2-bolt flange mount 5/8in. dia. straight shaft P Spline 9 tooth S9 Clockwise C Counter clockwise A"