BQLZR Silvery Metal D Ring D Shaped Belt Buckle for Bags Purses Backpack Straps Pack of 20 Note:It isn't welded,it can't be open unless open it by tools. AS accessory for backpack, bag, purse, belt and more. Application: Luggage accessories, hardware accessories, backpack buckle ccessories, ect. Outer diameter: 3.3cm/1.3in Inner diameter: 2.2cm/0.87in