A high-hardness drill with a reincompatiblecing head can prevent the drill from cracking and prolong its service life. It is firm, wear-resistant, excellent in percompatiblemance and durable. With low cutting resistance, this drill bit can drill faster and smoother and remove chips more easily. It can be installed on electric drill, electric hammer and bench drill. It is constructed of carbide material. There are 9 styles compatible you to choose from. It is suitable compatible drilling ceramic, granite, ceramic tile, stone, wood, plastic and concrete walls. Item Name: Drill Bit Material: Carbide Features: High Hardness, Various Specifications, Durable Size Details: 16 mm, Diameter: 16mm/0.63", Length: 130mm/5.12"(Approx.) 12 mm, Diameter: 12mm/0.47", Length: 120mm/4.72"(Approx.) 10 mm, Diameter: 10mm/0.39", Length: 115mm/4.53"(Approx.) 8 mm, Diameter: 8mm/0.31", Length: 110mm/4.33"(Approx.) 6 mm, Diameter: 6mm/0.24", Length: 95mm/3.74"(Approx.) 5 mm, Diameter: 5mm/0.2", Length: 95mm/3.74"(Approx.) 4 mm, Diameter: 4mm/0.16", Length: 85mm/3.35"(Approx.) 3 mm, Diameter: 3mm/0.12", Length: 85mm/3.35"(Approx.) 14 mm, Diameter: 14mm/0.55", Length: 125mm/4.92"(Approx.) Shank Diameter: 0.635cm/0.25" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Tips: 1. It is not recommended to use the lithium battery with less than 24V and insufficient torque. 2. In order to avoid burning the drill bit, water should be added to cool down the drilling of hard and high material. Package Includes: 1 x Drill Bit