Features Wide Application: The scope of hard alloy drills is widely used, which can be widely used in tiles, concrete, brick walls, glass, mirrors, plastic masonry, wood, etc. Hexagonal Handle Design: The enlarged spiral flute improves the removal of the chip, while the 6.35mm hexagonal handle can prevent slipping. Settings at the End of the Slot: Cemental glass drilling is a cutting -edge slot design that can achieve high precision and fast drilling materials, which has the characteristics of stability and reliability. Cemented Carbide Material:The drill bit kit is made of a selected CEMENTD Carbide. It has the characteristics of sturdy and not easy to rupture. It is very durable and can be used for a long time. 8PCS Masonry Drill: Multi-functional tile drill with different size-8PCS masonry drills. The form of cutting diameter is 5mm to 12mm, which can meet the basic needs. Specification: Item Type: Masonry Drill Bit Material: Cemented Carbide Colour: Black Shank Diameter: Approx. 6.35mm / 0.25in Cutting Diameter: Approx. 5 ~ 12mm / 0.2 ~ 0.47in Application: Multi purpose drill bit for tile, concrete, brick wall, glass, mirrors, plastic masonry and wood.  Package List: 8 x Masonry Drill Bit Note: Although the alloy tip has high hardness, please do lubricate it with water when drilling hard materials such as glass, porcelain floor tiles, marble or granite. Package List 8 x Masonry Drill Bit