Wide range of uses: These different sizes are great for making a variety of different jewelry crafts, such as earrings, necklaces, bracelets, keychains, etc. It can also be used as a repair material for necklaces and other crafts, with a wide range of applications Highquality material: Our open silver jump rings are made of highquality black metal material, which is sturdy, not easy to break, and durable; the selected silver color is very suitable for making and repairing jewelry for a long time 4200 Pieces Jump Ring Kit: This mixedsize open jump ring set has 4,200 pieces, including 4mm, 1,000 pieces 5mm, 700 pieces 6mm, 500 pieces 7mm, and 400 pieces 8mm. Sufficient quantity for easy replacement, you will have more materials for making and fixing crafts Easy to UseThis open jump ring set does not need to be soldered closed, and can be easily opened and closed with tools. Great for making locket pendants and trying new weaving 1 Box of 5 Sizes Silver Jump Rings: You will receive jump rings of various sizes packed in plastic boxes. These silver jump rings come in 5 sizes, 4mm, 5mm, 6mm, 7mm and 8mm, the different sizes will be separated for later use. Various sizes will satisfy your craft projects