This CRAFTMEMORE Metal Rectangle Buckle Ring is perfect for making bags, belts, and loops. It fits 5/8", 3/4", and 1" straps and is made of heavy duty rectangular cord. The size indicates the inside strap wide opening and the thickness is approximately 3 mm (1/8 inch). It comes with 20 pieces of antique brass. Matching sliders and D rings are also available in our CRAFTMEMORE storefront on Amazon. Get this buckle ring and all your purse making supplies from CRAFTMEMORE today!