Graco Dura Flo 32:1 6500 cc Motor 425 cc Lower 2 Ball Piston Pump : De Icing NXT Motor w DataTrak Stainless Steel Lower Material 3 UHMW w 2 Tuffstack Packing Nylon w Stainless Steel Field and Pavement Markings pumpcontainer 400 lb Field and Pavement Markings Our pump also features a precision balanced solid cast iron crankshaft with Timken Style stainless steel roller bearings on the front and rear of the crankshaft to ensure smooth & efficient operation with less drag and less energy use these durable pumps feature an NXT motor and can now achieve an even higher range of pressures without compromising flow 2 ball piston design provides uniform and easily controlled delivery