20pcs Backpack Luggage 32mm Metal Belts Loop Ring Rectangle Buckle material:metal great for the use of collars,belts,backpacks, luggage outside dimension is approx 3.9 x 2.7cm/1.53 x 1.06""(L x W) inner dimension is approx 3.2 x 2cm/1.25 x 0.78""(L x W) can be used in various applications,sports equipment,pet products and so on