Item Description:One drill bit replaces two drill bits (1x glass & tile drill bit + 1x Mansonry drill bit), Perfect drilling fastner holes in bathroom tiles, or wall mirrors. Once it drills through the tile or mirror this drill bit will cope easily with any masonry behind itSpear pointed design strong tungsten carbide tip can easily penetrate various material(tile, concrete, brick, glass, plastic and wood,etc) and reduces colour:blackMaterial:Carbon steelsize:6mm,8mm,10mm,12mmPackage Contents:12 * Triple-cornered drill hole opener (including: 6mm6 8mm3 10mm2 12mm1)Only the above package content, other products are not included.Item Specification:DIY Supplies: MetalworkingType: Center Drill Bit