Features： 1、Drill Bit Sharpener: This drill bit sharpener works ly in sharpening various iron drill bits, making it incisive again. 2、Use in Conjunction: With 1/4in diameter hex shank, ideal for use on tools such as electric screwdriver, manual screwdriver, etc. 3、Practical Grinding: Suitable for grinding drill bit from 2.0mm to 12.5mm, and also ensures efficient sharpening with great ease. 4、Simple for Carrying: Designed to have a small size and a light weight, the easy storage and carrying largely simplify daily work. 5、Extra Durability: Made of 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