General description Ropes, chains, ratchet straps, and S-hooks utilize this set of 6 heavy-duty anchor rings to secure bicycles, garden tools, large household appliances, machinery, and other cargo to trailers, truck beds, RVs, vans, boats, and warehouses. Technical specifications Material: Galvanized Iron Color: Silver D-Ring Length: 34 mm D-Ring Internal Space: 26 mm D-Ring Thickness: 6 mm Mounting Bracket: 57 x 20 mm / 2.24 x 0.79 in Bore: 6 mm / 0.23 in Bearing Weight: 540 kg Package Includes: 6 * D-Ring Other information Please check the size chart carefully before making a payment. Please allow 1-2 mm deviation due to manual measurement. The color of the actual items may vary slightly from the images due to different screen settings. The D-ring should only be used as a cargo anchor and not for overhead lifting.