YOKOCUT 7Pcs Tungsten Carbide Masonry Drill Bit Set for Metal Steel Porcelain Ceramic Tile Concrete Brick Plastic Wood, Multi-Material Drill Bits Set, with Durable Storage (4-5-6-6-8-10-12mm)\n\uD83D\uDD25 YOKOCUT Superb Professional Tile Bits Set.\n\uD83D\uDD25 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 tile, wood, brick and concrete.\n\uD83D\uDD25 This Pack contains: 4mm, 5mm, 6mm, 6mm, 8mm 10mm, 12mm tungsten carbide masonry drill bit.\n\uD83D\uDD25 The Quick Change Hex-Shank design helps the hand electric drill to clamp the drill bit and prevent slipping and wandering, fit for most hand electric drills.\n\uD83D\uDD25 YOKOCUT Masonry drill bits made of high quality tungsten carbide, with a strengthened head, high hardness, not easy to break and bend, surface rust treatment, long service life.