Features:100% brand new and high qualityHigh quality materials: It uses a hard alloy as a raw material.Thorough, clean, matte grinding and antioxidant treatment, no burr. Drill is more wear and durable. Automatic polishing polishing CNC automatic, each piece is uniform.Unique triangular design: low anti-shear resistance, stable drilling characteristics, high speed, and do not tear the cutting edge. Clean, smooth opening, no broken edges, no shaking, not easy to chip.Professional drill offers smooth and precise drilling on tiles, marble, iron plates, mirrors and glass. Remember to add water or coolant when drilling.Quality is guaranteed, please rest assured to buyPackage Includes:10xPunch DrillSpecifications:Category: Hardware impact drillMaterial: HardwareSpecifications: 6 mm tile drill bitSet quantity: 10 piecesnote:No retail package.Transition: 1cm=10mm=0.39inchPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you