Features: 1.Screw clasp used to connect the ends of a necklace or bracelet together, twisting the two pcs into a cylinder shape to hold them together. 2.Barrel screw clasp made of platinum plated brass, lightweight and has beautiful silver surface, has good decorative effect. 3.Built?in safety screw locks, well made and highly durable, easy to screw together. 4.Total 50pcs of clasps are available for use, exquisite workmanship, enough to satisfy your DIY needs. 5.Very suitable for DIY jewelry or repair your existing jewelry, or easily make necklaces, anklets, charm bracelets or any handicrafts, fashion works.specification:Item Type: Jewelry Screw Clasp Material: Platinum Plated Brass Quantity: 50Pcs Size: Approx. 5 x 11mm/0.20 x 0.43in Function: Can be used to DIY jewelry accessoriesPackageList:50 xClaspNotePlease allow light error due to manual measurement. Thanks for your understanding.