1Function: Simply weld these D ring on your truck, trailer, cargo van, as the anchor point to secure your boxes, cargo, shipment, golfcar, car, motorcycle. 2Parameter: The thickness of this D ring anchore is 1/2in, with working load limit of 4000 Lbs, and breaking strength of 12000LBS, which is strong enough for daily use. 3Clip: Provided with a clip which need to be welded to metal surfaces, it fits perfect with the D ring, to make your installation more stable and stronger bearing capacity. 4Material: Made of solid forged steel material, strong load bearing, strong, high hardness, high strength, not easy to deform, can withstand harsh use environment. 5Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability.