This is Sterling Silver Bezel Serrated 1/8" size; 3.5mm wide, 0.32mm (0.013") thin, 28 gauge; Best for easy draping over bezel, soft; For jewelers and students. Each lot is 18 continuous inches .Jewelers employ serrated silver bezels to secure gemstones. The bezel's edge is serrated because it has tiny teeth or indentations that grip the stone. A serrated bezel holds delicate gemstones or cabochons without facets better than a smooth bezel. Silver bezels reflect the gemstone's beauty. Jewelers employ serrated silver bezels to set gemstones in attractive, unique creations.