Raise and lower material quickly and easily with Mechanical Scissor Carts. Carts roll smoothly on two rigid and two swivel poly-on-poly caster. Mechanical screw drive provides precise positioning with no downward drift. The partially stainless steel cart features a stainless steel platform. Frame, handle, caster rigs and hardware are zinc plated. Crank assembly and scissor legs are painted. FOB Shipping Point.