Features Drill Bit Sharpener: This drill bit sharpener works perfectly in sharpening various iron drill bits, making it incisive again. Use in Conjunction: With 1/4in diameter hex shank, ideal for use on tools such as electric screwdriver, manual screwdriver, etc. Practical Grinding: Suitable for grinding drill bit from 2.0mm to 12.5mm, and also ensures efficient sharpening with great ease. Simple for Carrying: Designed to have a small size and a light weight, the easy storage and carrying largely simplify daily work. Extra Durability: Made of premium ABS material, which is not easy to deform, the drill bit grinder is very durable for long use. Specification: Item Type: Drill Bit Sharpener Material: ABS Colour: Navy Blue Hex Shank Diameter: 1/4in Applicable Grinding Drill Bit Diameter: Approx. 2 ~ 12.5mm / 0.1 ~ 0.5in Function: For grinding passivated drill bits (not suitable for drill bits with high hardness).  Package List: 1 x Drill Bit Sharpener 1 x Wrench 1 x Nut 1 x Washer Note: For grinding iron drills bits, not suitable for drill bits with high hardness. Please allow 1‑3mm error in manual measurement of the size. After use, put it in a dry and clean place. Should not use with corrosive chemicals, which may shorten the life expectancy. Package List 1 x Drill Bit Sharpener 1 x Wrench 1 x Nut 1 x Washer