Feature:1. Widely Usage: Can be used for , ceramic tile, mirror, flower pot, wood, porcelain, brick, wall, marble, thin iron plate, etc. Please keep the drill bit vertical and cool it with cooling water. Do not use on hard tiles.2. High Quality: Made of high quality hard alloy. The head is treated with rust prevention to prevent the bit from cracking and prolong its service life.3. Quick Replace: Hexagonal handles are easier and safer to install into all power tools. Compatible with other general purpose electric drills.4. Multiple Sizes: There are a variety of sizes for option, 5/6/8/10/12mm. You can choose the most suitable one according to your need.5. Precision: Precise and unique cross angle design make ground spear tip reduce sliding; Advanced tile cutters go through tile neatly and fast.Specification:Features:Widely Usage: Can be used for , ceramic tile, mirror, flower pot, wood, porcelain, brick, wall, marble, thin iron plate, etc. Please keep the drill bit vertical and cool it with cooling water. Do not use on hard tiles.High Quality: Made of high quality hard alloy. The head is treated with rust prevention to prevent the bit from cracking and prolong its service life.Quick Replace: Hexagonal handles are easier and safer to install into all power tools. Compatible with other general purpose electric drills.Multiple Sizes: There are a variety of sizes for option, 5/6/8/10/12mm. You can choose the most suitable one according to your need.Precision: Precise and unique cross angle design make ground spear tip reduce sliding; Advanced tile cutters go through tile neatly and fast.Specifications:Material: Hard AlloyColor: BlackPackage Size: 16 * 7 * 2cm / 6.3 * 2.8 * 0.8inPackage Weight: 300g / 10.6ozPackage List:4 * 6mm Drill Bit2 * 5mm Drill Bit2 * 8mm Drill Bit1 * 10mm Drill Bit1 * 12mm Drill BitPackage List:4 * 6mm Drill Bit2 * 5mm Drill Bit2 * 8mm Drill Bit1 * 10mm Drill Bit1 * 12mm Drill Bit