This set of 6 ton jack stands have been stamped from heavy-duty steel and fully welded at all seams, providing strong and dependable protection when under the car. The ductile iron ratchet saddle extensions have a height range of 15-3/4 to 21-3/8 inches, offering 10 different settings to keep your car at just the height you need and the innovative wide-angle four-point stance offers extra stability.