Features 1、Versatile Material Compatibility: Constructed from excellent carbide, these cement tile drill bits are engineered for ease of use across a wide array of materials. They can effortlessly drill through glass, ceramics, tiles, mirrors, pots, wood, marble, thin iron sheets, plastics, and even concrete or brick pavers, making them an essential tool for various handcraft and professional projects. 2、Professional Grade Performance: Designed with industrial strength tip construction, these professional carbide drill bits offer maximum cutting power and accuracy. The incisive and rugged design ensures efficient drilling performance, allowing you to tackle tough materials with confidence and achieve clean, accurate holes every time. 3、Water Cooled Drilling Capability: For drilling into harder materials like tiles, marble, glass, and granite, it's recommended to use water for cooling. This not only prolongs the life of the drill bit but also aids in maintaining optimal drilling speed and prevents overheating, ensuring effective and safe operating during your tasks. 4、Hex Shank: Featuring a 1/4in hex shank, these professional concrete drill bits minimize the risk of slipping when drilling into hard surfaces. This design enhances safety and control, making them compatible with standard electric drills, handheld drills, and benchtop drills, ensuring a snug fit in various drilling machines. 5、User Friendly Operating Instructions: These masonry drill bits are designed for ease of use, with clear instructions to achieve the best results. When drilling into harder materials, users can apply increased pressure gradually while maintaining a vertical drilling angle, ensuring a slick and efficient drilling process without damaging the surfaces. Specification Item Type: Masonry Drill Bits Material: Cemented Carbide Shank: Approx. 1/4in / 6.35mm Shank Package List 5 x Drill Bits 1 x Storage Box