Double Cap Rivets - 4 commonly used colors (gold, silver, bronze, gunmetal) that will add retro and exquisite style to your leather crafts, total 240 sets | 2 Assorted Sizes - Large size that the cap, post and base are all 8mm (5/16 inch); Small size that cap, post and base are all 6mm (1/4 inch). Please make sure that your fabric is not thicker than the rivet size | Practical Setting Tools - the included punching tools and anvil ensure quick and easy installation even you're a new hand, you will quickly figure out how to use it by watching our guide video | Wide Application - These leather rivets are useful accessories which can be applied for DIY leather crafts, repairing and decorating wristbands, hats, jeans, windbreakers, belts, shoes, sandals, down jackets, bags and so on | Compact Storage Box - All rivets and tools are neatly placed in a clear storage box, so you can easily find the size and color you need