Features: brand new and high quality Selected carbide tip: hard and for tough material, good wear resistance, high toughness, and more durable for Sharp cross-shaped four-edged blade: Fully ground four-edged blade, very for sharp, greatly improving the drilling speed Non-slip hexagon handle: The hexagonal design of the handle makes the drill grip tighter and does not slip Compatible models: electric hand drill, rechargeable drill, electric wrench High work efficiency, worth buying Specifications: Material:Cemented Carbide Diameter 1: 10mm/0.39inch Diameter 2: 12mm/0.47inch Diameter 3: 3mm/0.11inch Diameter 4: 4mm/0.15inch Diameter 5: 5mm/0.19inch Diameter 6: 6mm/0.23inch Diameter 7: 8mm/0.31inch Note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1PcxHexagon for Cross Tile Drill Bit