These Gold 3/4 inch metal D Rings are made from a strong zinc alloy. The metal makes them durable while the gold coating provides a lustrous finish. They work very well with pet collars, bracelets, belts, backpacks, and other fun rope projects! D rings accommodate various types of paracord including but not limited to 425, 550, and 750. Other types of rope include Twisted Cotton, Nylon Webbing, or any of our Macrame Cord. D rings are also available in plastic, and these colors: silver, black, and brass .