Size: about 10mm in diameter, 1mm thick; about 8mm inner diameter; about 260pcs/bag; packing size: 74x105mm. Usage: These jump rings are perfect for any project you have, whether to make chainmail armor, try out new weaves, make spectacular jewelry items or something else entirely! Easy to use: These split jump rings are perfect for any project you have, whether to make chainmail armor, try out new weaves, make spectacular jewelry items or something else entirely! Learn simple and exciting techniques to make jewelry just like you see in department stores, affordable way for DIY to get great style. Wide Application: Great for DIY your special & unique jewelry, excellent size for suspending small items from delicate necklaces, bracelets, anklets.