Features: 100% brand new and high quality Cemented carbide: hard material, good wear resistance, high toughness, sharper Widened chip flute: high-speed operation, fast chip evacuation, and improved efficiency Scope of application: compatible with hand drill/ bench drill/ rechargeable drill Suitable for cutting ceramic tiles, concrete, red bricks and other materials Note: The material with higher hardness needs to be cooled by adding water to avoid the bit burning Package Includes: 1 Set Threaded Cross Drill Specifications: Material:Cemented Carbide Color :Black 5PCS Set 1 Size:Approx. 5mm/0.19inch+6mm/0.23inch+8mm/0.31inch+10mm/0.39inch+12mm/0.47inch 5PCS Set 2 Size:Approx. 6mm/0.23inch+6mm/0.23inch+8mm/0.31inch+10mm/0.39inch+12mm/0.47inch 6PCS Size : Approx.3mm/0.11inch+4mm/0.15inch+5mm/0.19inch+6mm/0.23inch+8mm0.31inch+10mm/0.39inch+12mm/0.47inch 7PCS Size: Approx. 4mm/0.15inch+5mm/0.19inch+6mm/0.23inch+8mm/0.31inch+10mm/0.39inch+12mm/0.47inch 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