About this item Tile drill bit, Industrial strength carbide drill bit tip, excellent abrasion resistance, make the drilling much more easier. The bit features a Tungsten carbide tip for extended bit efficiency and life. This porcelain tile drill bit is suitable for most general drill, electric drill, hand drill and bench drill. this ceramic tile drill bits can easily penetrate various material , glass, ceramic tile, marble, wood, travertine, ceramic, stone, concrete, brick, hard plastic, cement, etc. ideal for drilling fastner holes in bathroom tiles, or wall mirrors, can easily drill holes on tile, concrete, brick, glass, ceramic, wood, and reduces breakout, please cooling with water and control the speed when drilling. › See more product details