Olympic Adapter Sleeve (2 PCS), Converts 1" Standard Weight Plate Posts to 2" Olympic Weight Plate Posts, Suitable for 1" Standard Barbell Bars, Heavy Duty Nylon and Removable end Cap (2 Pcs),
INSTRUCTIONS FOR OLYMPIC TO STANDARD ADAPTER The adapter lets you mount olympic plates (2 inch hole) on standard bars (1 inch in
Olympic to Standard Barbell Dumbbell Weight Plate Adapters - Etsy Canada
Amazon.com : Olympic Plate to Standard Bar Adapters (Black, 1") : Sports & Outdoors