Chain clasp set: you will receive 100 jump rings, 100 crimping ends, 50 extension chains, 50 lobster clasps, a total of 300. All in gold colour. Plus 1 tweezers, 1 jump ring opener. Complete accessories Practical for you to make and restore jewellery projects Size FitsThe jump ring size:5mm diameter; Crimping end size:4*8mm; Extension chain:45mm length; Lobster clasp size:12mm length. Material and WorkmanshipLobster clasp made of metallic copper, with excellent gold plating process, beautiful workmanship and the color is bright, you can use it for a long time. Easy to use: each bracelet closure crimping ends and split rings can be easily opened and closed. The middle part is fastened with a lobster clasp, and the well made so that it does not fall off easily. Wide range of applications: chain clasp can be used to make earrings, necklaces, bracelets and more. Also tool for DIY bracelet, necklace and other jewellery. Jewellery clasps can also be used as a jewellery extension.