These 1" wide brass D rings are cast with a brass finish, giving them a seamless profile and no weld marks. They work very well with pet collars, bracelets, watches, belts, backpacks! D rings accommodate various types of paracord including 425, 550, and 750. Also works with Twisted Cotton, Nylon Webbing, or Macrame Cord. Also available in plastic, and these colors: silver, gold, and brass .