Size & Quantity: about 24mm in diameter, 4mm thick(6 Gauge), 16mm inner diameter, 4pcs spring gate rings in box, packaged well. Great for DIY your special & unique jewellery, excellent for suspending small items. High Quality Material: These rings are made of 304 stainless steel, hand the high quality material makes these clasps hard, not easy to break, not easy tarnis, for long-lasting wear. Easy To Use: These stainless steel spring gate rings are a convenient substitution for other types of clasps. The closure of spring gate ring clasps is very easy to push and fit for most jump rings and chain. Feature: Pushes buckle, easy remove, strong spring gate rings create a strong hold to ensure clasps stay connected throughout the day. Attractive and easy to fasten.No more fumbling with clasps like lobster clasps. Widely Use: Suitable for key chain, backpack, handbag, charm chain, belt, purse, jewelry and DIY craft making. Also perfect for repairing your existing jewelry or creating homemade jewelry.