Snap Button fits 18/20mm Bracelet/Necklace/Key-chain/Earrings/ PopSocket/ Headband/ Face Mask etc. Interchangeable Combine different options. Bundle deal 10% off 2. Make Offer on a Bundle. Don't hesitate to let me know what you are looking for. I have many options. Brand New. Check out the additional pictures and video to see how Snap buttons work. *This listing is for a Snap Button only*