High-quality material: Made of high-quality hard alloy, the head is reinforced to prevent the bit from cracking and provide a service life. ACCURATE AND PRECISION: Precision ground spear tip reduces bit slide and walk; Premium tile cutter cuts through tile like butter, very neatly and quickly. Hex for Quick Change: 6.35mm hex for easier and installation into all power tools; Compatible with other universal hand drills, bench drills with locking quick change chucks. Wide Application: Suitable for glass, ceramics, tiles, mirrors, flower pots, wood, porcelain, brick walls and more. Please try to keep the drill bit vertical, and keep the drill bit cool with cooling water flow; it cannot be used to drill hard tiles. The package contains 7 pieces of high-quality high-durability drill bits: 3MM 4MM 5MM 6MM 8MM 10MM 12MM to meet needs. Colour: Material:Carbide Size:9.2x5.3x1cm Package Contents: 7 * tile drill Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.