WIDELY USED: suitable for openings of ceramic tiles, concrete, red bricks, marble, wood, glass, plastics, ., vitrified bricks, tiles, marbles, glass and other materials with high hardness need to be drilled while adding water to cool down.UNIQUE DESIGN: Using exquisite craftsmanship, sharp cutting edge, hardening and anti-fracture, high temperature quenching, fast drilling, fast chip removal of thread, plus hard alloy Triple-cornered drill wear-resistant wear, the drill bit is polished carefully, and the texture is consistent.TILE DRILL BIT: This drill bit can be used for many types of machines such as ordinary hand drills, bench drills and rechargeable drills. The clamping range is available within 10mm. After each use, please wipe off the stains on the surface of the product and apply anti-rust oil to prevent it from rusting.Colour:Black + SilverMaterial:Hard alloySize:(m 4mm 5mm)(8mm 10mm 12mm)6mmPackage Contents:12* Masonry Drill Bit