3pc long masonry drill bit set Set includes sizes: 8, 10 and 12mm Approx length: 400mm Fits all electric and cordless drills Masonry drill bits made of tungsten carbide, with a strengthened head, high hardness, not easy to break and bend, surface rust treatment, long service life. Hardened Shank For Strength and Durability. The strong carbide tip can easily drill holes in various materials such as brick, cement, etc. The deep spiral groove design improves the ability to remove debris during high-speed operation. Great for most materials in interior fitting work, metal, glass, ceramic tiles, wood, ceramics, stone, concrete, bricks, etc.