Ropes, chains, cords, straps to ratchet and S hooks use this silver ring to secure bikes, landscape equipment, large appliances, machinery and other loads on utility trailers, pickup beds, campers, vans, boats and warehouses. Specifications: Material: Galvanized Iron Color: Silver D Ring Length: 34mm Internal D Ring Clearance: 26mm D Ring Thickness: 6mm Mounting Bracket: 57 x 20mm / 2.24 x 0.79inch Hole: 6mm / 0.23inch Bearing Weight: 540 kg Package includes: 6 * D-Ring Note: 1. Please check the size measurement chart carefully before making a payment. 2. Please allow 1-2mm difference due to manual measurement. 3. The color of the actual items may be slightly different from the pictures in the collection due to the different screen 4. The D-ring should only be used as a cargo tie-down anchor and not for overhead lifting.