2 SIZEs: 15/18mm long, 12/14mm wide, 4mm thick, hole: 2.5mm. each size 6pcs, 12pcs in total in box, packaged well. Great for DIY your special & unique jewellery, excellent for suspending small items. FEATURE: Pushes buckle, easy remove, strong spring ring clasps 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. EASY TO USE: These steel spring ring clasps are a convenient substitution for other types of clasps. The closure of spring ring clasps is very easy to push and fit for most jump rings and chain. STAINLESS STEEL CLASPS: These clasps 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. WIDELY USE: Suitable for the leather, satin cord necklaces and other stringing materials to create an adjustable necklace or bracelet; Also perfect for repairing your existing jewelry or creating homemade jewelry.