Jewelry repair kit comes with totally 4600 pieces of jump rings in 5 sizes and a jump ring opener tool. quantity and nice assortment for jewelry making supplies and jewelry repairThe closed jump rings are made of lead-free metal that is safe and durable for use. All the jewelry jump rings are thick and sturdy and line up perfectlyThese jump rings are in sizes 4 mm, 5 mm, 6 mm, 7 mm, 8 mm. A nice variety of different sizes to meet your craft projects. The necklace repair kit includes a jump ring opener finger tool so you can easily open and close the jump rings to fix your earring hooks, necklace and other jewelry suppliesAll the jewelry jump rings are properly packaged in separate compartments for the different sizes, the case makes the small jump rings keep neatly in individual spaces to avoid messesStyle: Closed jump ringcolor:SilverMaterial:MetalPackage Contents:400 x 8mm Silver Jump Ring600 x 7mm Silver Jump Ring800 x 6mm Silver Jump Ring1200 x 5mm Silver Jump Ring1600 x 4mm Silver Jump RingOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.