High-strength steel D-ring fasteners for added strength and durability can hold up to 1200 pounds per ring. The cargo anchor tie-down rings are made from extremely strong, galvanized solid steel to prevent corrosion and rust. D-ring anchors add a convenient anchor point for ropes, bungee cords or straps. Widely used as anchor points on trucks, vans, kayaks, ATVs, campers, vans, boats and trailers, they are handy as wall hooks in garages, warehouses and organized workshops. The tie-down works well on all surfaces and floors. These D-rings come with mounting brackets but no bolts. Recommended installation would be with 1/4" diameter round head bolts to fit the 9/32" holes on the mounting clips. Once these D-rings are mounted, you can use them as tie-down anchors for motorcycle straps, bungee cords, tarp straps, small chains, ratchet and cam straps, ropes, and other tie-downs. Great for securing kayaks, ATVs and other powersports equipment, bicycles, refrigerators and similar appliances,