【Package include】5pcs 1/4" 1/4" 5/16" 3/8" 1/2"(6/6/8/10/12mm) carbide drill bits, total length 63.5-83mm, working depth 38-58mm, Drill head tip length 10-17.5mm,Shank diameter 3.8-8mm,Triangle Shank.Please see pictures for more details. 【Application】For dry drilling tile, wood, plastic (PVC pipe),foam tiles,antique tiles,glazed tiles,red bricks,cement,glass tiles, full ceramic tiles,ceramics,marble,glass,etc;Recommended for use with water/coolant (harder materials).A versatile product can carry out drilling processing and assist other drills to carry out accurate drilling positioning. 【Feature】Head cross design: Precise cross head design can reduce the drill bit slipping and travelling, which makes drilling more stable and easy to operate; the head with spiral groove, easy to discharge chips.High-quality material - steel matrix: the drilling body is made of selected high-strength steel matrix, which can effectively assist drilling and have a long service life. 【Why choose us】High Quality Material-Tungsten Carbide: The tip of the drill is welded with high-grade industrial-grade tungsten carbide, which has good wear resistance and can easily penetrate various materials, making it a must-have product for home decoration.Wide range of applications:Diversified materials available to meet the different needs of customers in all aspects. 【Machine】Suitable for many types of machines such as ordinary hand drills, table drills and rechargeable drills (lithium drills); lithium drills:recommended to choose a power higher than 24V. Flat drilling mode can only be used, please do not use the impact and hammering mode (vertical drilling can be used).Easy to operate.If you have any problem, please feel free to contact us for satisfactory customer service. Tile Wood Plastic Drill Bits - FACHLICH 5pcs 1/4" 1/4" 5/16" 3/8" 1/2"(6/6/8/10/12mm)Carbide Drill Bits Tip Triangular Shank for Wood, Plastic, Masonry, Ceramic Tile