1. High-quality materials: Made of high-quality cemented carbide. The cutter head uses a special process to enhance the hardness of the drill bit. 2. Surface treatment: The surface is comprehensively ground and rust-proof treated, clean and sharp, without burrs. The drill bit is more wear-resistant and durable. 3. Unique horizontal angle design: The cutting resistance is small, the drilling is stable, the speed is fast, and there is no edge damage. The holes are neatly opened, without chipping and tremor, and it is not easy to break. 4. Wide range of uses: Suitable for precise drilling of materials such as tiles, marble, thin iron plates, mirrors, and glass. It is a professional glass and tile drill bit. Remember to add water or coolant when drilling. 5. Five different sizes: Five sizes of 5MM, 6MM, 8MM, 10MM, and 12MM are provided to meet different needs. It can be installed on ordinary hand-held drills and bench drills. 6. Color: Black 7. Material: Cemented carbide 8. Dimensions: 4.5 x 2.2 x 14.1 cm 9. Package contents: 10 multi-functional tile drill bits 10. Note: Only the above package contents are included, and no other products are included. Due to light reflection and different monitors, the color of the items in the picture may vary slightly from the actual object. The measurement error is allowed to be ±1 - 3 cm.