SELEWARE Steel J Hooks for Power Cage Squat Rack Attachment, Only for 2x2 inch Square Tube with 1 inch Hole Rack, Barbell J-Hook Holder for Power Rack, J Cups Set of 2 :
Power Rack Attachment Steel J Hooks for Power Racks fit 3x3 inches Square Tube with 1 inch Hole Power Cages Capacity of 800lb (Pair) : Amazon.ca: Automotive