925 Sterling Silver Clasps: the round O ring clasps are made of 925 sterling silver, high quality, a good choice for those have sensitive skin, comfortable to wear, keep shining. Good quality, best choice for gift. Ensure an elegant appearance but also makes you feel comfortable to wear Golden & Silver Spring Clasps: package includes 2pcs round spring buckles in 2 colors: golden and silver; each color 1pc; about 12mm/0.47 inch in diameter, large enough to fit around a thick chain, practical and perfect embellishment for jewelry making Simple & Versatile: the spring O rings buckles are in simple style, making them highly versatile, stylish and secure clasp, work well for a strand of vintage pearls wearing in different ways, multi-functional and versatile for DIY jewelry making projects Easy to Match: the round spring gate rings can be used to suspend pendants and hang on necklaces, with spring design, push gate-lever inwards to open, easy to close and open, multi-functional and versatile for DIY jewelry making projects Multiple Usages: the metal jewelry clasps can extend or clip a charm or pendant onto a chain. Usually used for making bracelets, necklaces, ankelets, waist chain, jewelry and DIY crafts making. Make your crafts colorful and show your personal style