The heavy-duty JK: Alpha Hi-Lift Jack Mount Bracket provides a safe, quiet, and secure mounting point for a Hi-Lift Jack. The 3/16in-thick laser cut and powder coated bracket bolts to the Alpha HD Hinged Spare Tire Carrier for unshakable stability. This bracket also incorporates a built-in CB antenna mount as well as an off-road flag mount for those sand dune trips. The Alpha RotopaX Mount Kit (sold separately � # 4838255) allows you to mount RotopaX containers to either the Hi-Lift Jack leg or to the Hi-Lift Jack Mount