Super Duty Welded Steel Power Rack Arm is a great way to get your FREAK hung! Designed to fit any 2" or 3" square tube steel power cages, simply remove mounting nut from end of unit, then insert the shaft into the required 1" diameter rack hole of choice. Thread nut back on and hand tighten. Attach GRIP FREAK to the eye bolt and its time to get your FREAK show started! GRIP FREAK Power Rack Mounting Arm is USA made, Commercial Grade, with Lifetime Replacement Warranty.