California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. 3/4 ton under hoist stand designed to support under car components; Support range from 53-1/2" to 80"; Acme threaded screw for self-locking positioning and foot pedal to raise screw another 1.25" under 400 pounds of load.; Bearing mounted spin handle for easy raising and lowering of screw; 12" diameter base with 1.63" x 5.5" saddle provide additional support