[18K Gold Plated Jump Rings]: The open jump rings are made of 18k gold plated stainless steel, the golden yellow sparkles, which makes it more textured, not easy to rust or fade, won't bring burden or cause discomfort to your skin, safe and comfortable to use.[600Pcs Jump Rings In A Box]: 600Pcs jump rings, size about 4mm diameter, 0.8mm thick(20 Gauge), all packaged in a small box: 68x52x11mm, easy to not lose the pieces, can keep rings from dirty.[Firm Single Loops]: The open single loop jump rings provide stable support for your crafts, and their round edges keep closed firmly, making the connected loop chain less likely to fall apart.[Easy to Use]: These metal jump rings have a unique design, you can easily open or close the jump ring. At the same time, you can easily connect them with other jewelry, saving you a lot of time and making you feel free to do it yourself.[Wide Application]: These elegant and practical jump rings have a wide range of uses in everyday life. Not only can you use them to make jewelry by yourself, you can also repair other broken jewelry, and they can be used as beautiful gifts for your friends and family.