Material: Solid Sterling Silver with 925 Stamp Dimensions: ap.13.2x13.8mm (include rings), Ring Hole 1.2mm 3-Strand Tube Clasp for Necklace and Bracelet Finish: 18kt Gold Plated Brand: egemmall ( a registered trademark). All pictures are exclusive property of egemmall and are protected by the copyright laws. Solid sterling silver Clasp for diy necklace and bracelet jewelry making.