5 piece SabreCut Extreme Professional Tile Bits Set. Pack contains 6mm x 100mm tile drill bits. SabreCut Multi-Material tile bits are designed to drill through the toughest of materials such as Ceramic, Glass, Granite, Marble and Porcelain. In addition, they can also be used to drill through softer materials such as wood, brick and concrete. Used correctly these bits will give you a nice clean precise hole for you to fix in to securely. The professional grade Carbide tip is designed to penetrate the hardest material quickly and the double flute helps remove the waste material efficiently. The bit size supplied is suitable for 6mm wall plug fixing solutions.