High quality cemented carbide. With improved head, it can prevent the drill bit from cracking and extend its service life. Pear tip design. With strong toughness and wear resistance, solves the problem of drill drift and slippage. The cemented carbide lance can accelerate the cutting speed and avoid cracking. Low cutting resistance, improves trepanning speed, saving time. These drill bits will drill without chipping or cracking when used properly. Multi-function drill bit kit. Used for drilling glass, tiles, porcelain, ceramics and other hard and fragile materials. Ideal for wood, metal, plastic, cement and other fragile materials. Package dimensions: 16.1 x 13.9 x 1.7 cm; 190 grams 869 in Drill Bit Sets Features: The pointed tip reduces blowout and the bit has a carbide tip.< /p> Used for drilling glass, tile, porcelain, ceramic and other hard and fragile materials. Carbide tip for fast cutting speed and long life increased. Low cutting resistance, improves trepanning speed. This bit drills without chipping or cracking material when used correctly. Features: Material: carbide. Color: gold. Shank diameter: approximately 6 mm. Total length : approximately 72 mm. Use: masonry drilling. Head type: lance head. Drill type: tile and glass drill bit.