Caddy CAT J-hook Cable Support System - Cableorganizer.com
SELEWARE Solid Steel J Hooks for 2" x 2" Tube Power Cage with 1" Hole Squat Rack Attachment, J-Hook Barbell Holder for Power Rack, Set of 2 : Amazon.ca: Sports & Outdoors
XM Fitness J Hooks (pair) – The Treadmill Factory
J-Hooks - NSI Industries
Fitness Reality 2816 Steel J-Hooks, Set of 2, Fits 2" x 2" Steel Power Cages 313033235227 | eBay