Titan Fitness Olympic Weight Plate Holder for T-2 Power Rack 2"x2" Tube 1" Holes Fits: Titan T-2 Series power racks and others with 2" square tubes with 1" holes Easy to assemble: Simply insert 1" peg into 2"x2" power rack holes and slide down to lock into place. Durable: Heavy-duty steel construction with black powder coated finish that prevents rusting and scuff marks. Holders: 8" long sleeves hold Olympic size weight plates (2" or larger hole) Includes: 1 pair of plate holder bars