Leather Snaps: The package includes 4 types of leather snaps, which are #201, #831, #633, #655. Each set consists of (cap + socket) with (stud + washer), a total of 40 sets, each type 10 sets. All tools are stored in a transparent storage box to make sure the colors of the snaps are not mixed up. You can quickly find what you need. Snap Tool Size - Button Caps of #831 and #201 are approximately 0.59"/15mm in diameter and 0.24"/6mm in height. #631 is approximately 0.49"/12.5mm in diameter and 0.22"/5.5mm in height, and #655 is 0.4" x 0.2" / 10mm x 5mm ( Dia*Height). Easy to Use: The snap button tool comes with different sizes of installation tools for each model snap, non-slip designed allowing make you easy to install by yourself. Don't worry about the snap fastener falling off, the 4-part clasp makes snaps buttons steady. Sturdy Material: The button snap kit for clothing is made of copper with plating process, snaps tightly, which is sturdy and durable, rust and corrosion resistant for long lasting use. Wide Application: This Snaps Button kit is enough to meet your different needs in DIY clothing decoration. Suitable for clothing, leather, boat cover, children's clothes, doll clothes, backpacks, bags, hats, jackets or other places.