This 1/2 ton capacity base drive jack has all the mass characteristics you want. Durable steel, enamelled finish, 49.6 "to 68.7" lift range. Roll smoothly under the lifted vehicle to facilitate manual or automatic removal or installation of any transmission from the vehicle or light truck. Designed for ground and ground lifts. Relief valve for lowering control. Adjustable saddles with angle brackets and safety chains. Includes hardware and instructions. The saddle can be adjusted to fit any transmission, the safety chain can be tilted forward, backward and laterally, the 1-piece jack handle, the stable 39-1/2 inch x 39-1/2 inch 4-leg base, and the 3-inch steel wheel can rotate 360 degrees on the ball bearing casters.