Heavy Duty D Rings are made of high strength steel. D ring tie downs have a mounting breaking strength of 1,200 pounds and a maximum load capacity of 1,200 pounds. Solid zinc steel to prevent corrosion and rust. Mounting Ring Includes: 10 × D rings, 10 × mounting brackets, each mounting bracket size is 6 x 2 x 0.3cm, D ring size 4.5 x 4 x 0.6cm, hole The height of the above bracket is 0.63cm> D ring anchors require ropes, bungee cords or straps and basic hardware that can be easily attached to a metal or wood floor. They are commonly used as anchor points on trucks, vans, kayaks, ATVs, caravans, vans, boats and trailers and are handy as wall hooks in garages. D-ring attachment, ideal for securing cargo in boats, cars, RVs, kayaks, ATVs, caravans, also great for indoor use. High strength steel, resistant to 1200lb assembly breakage Can be easily attached to a metal surface or wood floor with just two screws and basic hardware Ideal for securing kayaks, ATVs and other sporting