These are top quality, nickel plated steel, welded 3/8 inch D-rings. It may be used at the end of a leather or fabric strap or webbing, or may be secured to a surface with a metal or fabric strap. D-rings have numerous uses including making belts, harnesses and dog collars, luggage straps, and backpacks. D-rings have many other applications such as securing cargo and on vehicles for storage or transport. D-rings can also be used on trailers as tie down anchors. The uses for metal D-rings are endless!