ADM50-2UP PRINCE MOTOR, 3/8" HOLE IN SHAFT, 2 HOLE MOUNTING FLANGE, 1" WITH CROSS-HOLE, STANDARD END PLATE, MANIFOLD PORT FACE, 1" TAPERED SHAFT, 3 IN3/REV, 1400 PSI CONTINUOUS MAX PRESSUER, 2200 PSI INTERMITTENT MAX PRESSURE, 800 RPM CONTINUOUS MAX SPEED, 1000 RPM INTERMITTENT MAX SPEED