Suitable for drill bits with a diameter of 2-16mm. It supports the replacement of grinding discs (the back cover is opened for replacement). It is small in size, light in weight and easy to carry. It is an Perfect tool for artisans to grind drill bits. Characteristic: It takes only 5 seconds to easily sharpen all types of drills, which are suitable for high-speed steel, cemented carbide, twist, cobalt and other drills. It can also be used to sharpen other tools. (Recommended for electric drills above 16V, with better effect) The drill sharpener has high strength body, high hardness and durability. Equipped with high hardness grinding wheel, it brings you faster sharpening speed and convenience. Alloy transmission shaft, round and boundless design, suitable for all chucks. Equipped with three drills with different sizes (2-4mm,4-8mm and 8-16mm) to meet the daily application requirements., Weight: 0.3527396192 Pounds, Manufacturer: PokFhgur