Large Quantity: You will get 60pcs 12mm round open jump rings in rainbow colour. Package comes with a plastic storage box to use and store, enough quantity can meet your handmade decoration needs. Rainbow Color Design: The rainbow open jump rings is designed with rainbow metal color, shiny and fashion. Different angles will reveal different shades of lights. It is suitable for various jewellery and craft making. 304 Stainless Steel Material: The rainbow open jump rings are made of stainless steel material, which is solid and sturdy, smooth on surface, not easy to fade, It has moderate weight and a long service life. Size Details: The open jump ring is about 0.47 inch(12mm) in diameter, 0.04 inch(1mm) thick(18 Gauge), the inner diameter is about 0.39 inch(10mm). Proper size for you to use. Wide Usage: Use these rings to clamp pre-punched jewelry , and apply a small amount of pressure to pinch the hooks to ensure that the beads or pendants do not slide. Widely used to attach charms, beads, crystals, gems and some other pendants to necklaces, earrings or bracelets.