Pandahall 1Box/900pcs Mixed 6 Color Iron Open Round Jump Rings for Jewelry Makings 8x0.8mm 1 Box 6 Color Iron Jump Rings Close but Unsoldered Metal Color: Antique Bronze & Red Copper & Golden & Silver & Platinum & Black Size: about 8mm in diameter, 0.8mm thick; about 6.4mm inner diameter, about 900pcs/box. Suitable for suspending small items from delicate necklaces, bracelets, earrings, anklets. Open round jump rings are an integral part of jewelry-making. They hold designs together and will allow you to embellish them in numerous ways. From adding charms to lengthening clasps, jump rings are always needed.