Features: High-quality drill: high-quality multi-function drill set metal, with triangular handle, can easily penetrate different materials, easy to locate, stable drilling, fast speed, unlimited damage and clean openings. Practical drilling tools are a good gift for fr-iends who like to make. Note: When drilling hard materials (glass, tiles, marble or granite), please lubricate with water. Upgrade two-in-one: Metal drilling tools professionally combine chips and drill bits. The pointed design is more user-friendly, saves for time, and can be punched quickly. High-quality materials: The drill bit group is made of high-quality cemented carbide wood and metal stone. It has for stronger hardness and wear resistance than conventional alloy materials, and is not easy to break and bend. Improve work efficiency and extend service life. Easy to use: U-shaped groove design, quick removal of dust from the drill bit, 3 flat shafts make the drill bit firmly fixed in the tile drill bit group. Wide range of uses: professional steel drill bit sets are very suitable for drilling holes in all types of materials, including tiles, concrete, ceramic tiles, bricks, wood, plastics, glass, masonry, etc. Note: When drilling hard materials (glass, tiles, marble or granite), please lubricate with water. Specifications: Material: Metal Size:As the Picture Shows Note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: for Triangle Bit:M6/M8/M10/M12 for Cross Word Double-end Bit:M6x1 Hole Opener:M6/M8/M10 Expansion Tube: M6x30 MM(10 Pcs) M6x40 MM(10 Pcs) Screw: M6x25 MM(10 Pcs) M6x30 MM(10 Pcs)