Titan Fitness Pair of HD J-Hooks for T-3 Series Power Racks & 2"x3" Square Tubes Compatibility: Titan Fitness T-3 Series Power Racks and some others with 2"x3" corner tubes; Durable: Made of strong heavy duty steel with a powder-coated finish Weight Capacity: Each j-hook will hold 500 lb, the total with 2 is 1,000 lb Quality Design: Easy to put on and take off for height adjustment; front is shorter for easier lifting off Safety: Locks securely into place; lined with UHMW plastic to avoid damage to bars