Jet 825-140175 Pallet Truck, 6,000 lbs., 48 x 27H, Black & White One-piece cast iron pump has a built-in valve that lowers the material in a controlled decent Overload protection ball valve prevents lifting loads past maximum capacity Poly-over-aluminum&#44; 7 in. x 2 in. steer wheels ensure contact with uneven floors and feature double-sealed Top-Stroke release valve prevents cylinder extension beyond maximum heightSpecifications Wheel Diam. - 7 in.