Strong and Durable: Adopt quality high tensile steel construction for strength and longevity, have a breaking strength of 3,000 pounds and an impressive working load limit of 1,000 pounds. Wide Application: Anchor all ratchet and cam buckle fastening straps, ropes, hooks and chains to secure cargo of all sizes and weights - bikes, ATVs, UTVs, quads, motorcycles, furniture , camping equipment, delivery boxes, delivery devices, heavy machinery and power tools, and other loads. Anti-corrosion and anti-rust: Made of high strength solid steel and painted with a high quality black protective coating to ensure that they are not corroded and rusted during long working hours. Easy Installation: Thread a screw or bolt through the 13/32"" diameter hole in the mounting clip and secure it to any wood or metal surface, such as a small truck or SUV, a interior van, a closed truck, a pickup box, a tailgate, etc. For floor mounting: The ring works on any surface or base. Sharp V-Rings come with iron, but do not come with screws. It was recommended to install 13/32"" diameter screws (between 3/8"" and 7/16""). Product Description Quantity:4 Features: The color black Material: steel Break strength of assembly: 3000 lb Working load limit: 1000lbs Screw hole diameter: 12mm / 0.5"" V-Ring Thickness: 0.3"" Scope of application: used in truck beds and rear doors, freight cars, utility trailers, enclosed trucks and trailers, platforms or transport, commercial vehicles, boats, warehouses, garages.