925 Sterling Silver -- The extender clasp is made of 925 sterling silver, comfortable to skin, ideal for most people to wear, while strong and sturdy enough to hold chains firmly. Tip: Please avoid it from water to keep shinyCome in 2 Colors -- You will receive 2 pcs twister clasps in 2 colors (platinum and golden), 1pc/color, equip with a suede fabric square silver polishing cloth, classic colors are easy to meet your matching needs. Size is about 13mm/0.51 inch long, 7mm/0.28 inch wide, 5mm/0.2 inch thick, the hole is 3x2mmElegant and Versatile -- The necklace clasps are designed in the round shape, smooth and polished finish, matches classic and bright tones, simple, elegant and versatile, ideal to add into assorted kinds of jewelry designEasy to Use -- These clasps have loop designs that enable you to easily attach them to chains, then just fold over or extend the folded part, easy to close and open, perfect for those who love jewellery makingExcellent Jewelry Accessories -- Ideal for use in various jewelry designs, including necklaces, bracelets, earrings, they can add a sophisticated edge to any jewelry crafts. You can use them for making new jewelry, repairing broken or old jewelry