3 Size: These jewelry making jump ring include 3 size in total, measures about 16.5mm/15mm/18.3mm inner diameter, various size can meet your different jewelry making needs. Large Quantity: The package includes 150pcs open jump rings in 3 sizes, each size with 50pcs, all storage in a transparent plastic box. Large quantity enough for your replacement and use. Premium Quality: These metal color rings are made of high quality stainless steel material, which looks look great and strong, excellent workmanship with bright color looks more glossy and of textural, not easy tarnish. Easy to Use: Perfect for connecting your favorite jewelry accessories together, which is stable and easy to operate, just right for home made jewellery, convenient to carry and easy to find. Wide in Applications: The open jump rings are suitable for different DIY projects, like linking small chain and earrings, bracelets, necklaces, and other jewelry crafting.