❖ The grinding wheel currently used in the product is bronze corundum grinding wheel, so the product is mainly used for grinding iron drill bit. Other drill bits with high hardness are not usable, and the loss will be relatively large.❖ The tool is driven by an electric drill to drive the mandrel, rotate the grinding wheel brown corundum, polish the drill bit, etc. The hex counter chuck (1/4") is suitable for use on a variety of tools, such as electric, hand, pneumatic screwdrivers, etc.❖ Suitable for grinding 2.0-12.5mm drill bits to play the role of grinding and repairing. Product Features:❖ Use an electric drill with shank to drive this tool.❖ Sharpen bits and improve working efficiency.❖ Grinding wheel made of wear-resistant corundum.❖ Good sharpening effect, saving a lot of effort.❖ Lightweight and compact size, easy to load.❖ Suitable drill size: 5/64" - 13/64" (2mm-5mm) 7/32" - 21/64" (5mm-8mm) + 11/32"-1/2" (8mm-12.5mm), the angle and width can be adjusted. The angle and width can be adjusted.❖ Best choice for novices and handlers❖ Place in a dry and clean place after use.❖ Do not use with harsh chemicals, it may shorten the service life. Product Specifications:❖ Color: Blue/Orange❖ Material: ABS + Alumina Grinding Wheel❖ Grinding Wheel Material: Bronze Grinding Wheel Alumina❖ Chuck Material: ABS❖ Product Size: 170*85mm (The size is shown in the picture)Drill Grinding Drill Bit - Product Handling:1. Install the grinder on the electric drill and lock the handle2. Hold the electric drill in one hand and the grinder in the other hand, use your thumb to gently push the drill bit3. During operation, the electric drill must rotate forward and the speed must be fastPackage Included:❖ Option A:1pc x (blue/orange) drill bit sharpening jig❖ Option B: 1pc x (blue/orange) drill bit sharpening jig + 2pcs. x Alumina Grinding Wheel (Grinding Machine Accessories)❖Option C: 1pc x (Blue/Orange) Drill Sharpening Jig + 1pc x Alumina Grinding Wheel (Grinding Machine Accessories)❖ Option D: 3pcs x Alumina Grinding Wheel (Grinding Machine Accessories)❖ Note: The drill sharpening jig itself includes alumina grinding wheel and wrench (as shown in the option diagram, if you don't know, What accessories are included, you can check the picture of the option diagram) Thank you! Note: ❖ Please allow 1-2mm error due to manual measurement. Thank you for your understanding.❖ The monitors are not even calibers, the color of the item shown in the pictures may be slightly different from the actual item. Please take the real one as standard.❖ After use, please put the drill out of the reach of children to prevent children from damaging the sharp parts.❖ We guarantee to provide you with the best quality products and the best service, if any problems, you can sue, we will provide various solutions for you to choose. About Comments:❖ If you have any questions about our product, please don't hesitate to speak, we will do our best to help you.❖ If you are satisfied with our products, please leave us a 5-star feedback or even some pictures of our product, thanks.