High-quality material: Made of high-quality hard alloy, the head is reinforced to prevent the bit from cracking and provide a longer service life. ACCURATE AND PRECISION: Precision ground spear tip reduces bit slide and walk; cuts through tile cleanly and efficiently. Hex Shank for Quick Change: 6.35mm hex shank allows for easier and safer installation into power tools; compatible with universal hand drills and bench drills with locking quick change chucks. Wide Application: Suitable for glass, ceramics, tiles, mirrors, flower pots, wood, porcelain, brick walls, and more. Maintain a vertical drilling angle and use cooling water to keep the bit cool; not intended for drilling extremely hard tiles. The package contains 7 pieces of durable drill bits: 3MM, 4MM, 5MM, 6MM, 8MM, 10MM, 12MM to meet various needs. Color: As shown Material: Carbide Size: 9.2 x 5.3 x 1 cm Package Contents: 7 x Tile drill bit Note: Light reflection and different displays may cause slight color variations. Measurement may vary by +/- 1-3 cm.