Easily Extend Drill Bit Life Forget the days of trying to find the right angle by hand or accidentally tapering the edge of your tools. Improve the use of drill bits, solve the problems you bought, save time and save money. Application The grinding drill tool is portable and easy to use, suitable for grinding 2 mm-5 mm (5/64 "-13/64"), 5 mm-8 mm (7/32 "-21/64"), 8 mm-12.5 mm (11/32 "straight shank drills -1/2 "). Sturdy and durable Made of high quality ABS plastic and brown corundum grinding wheel, high hardness, anti-rust, strong and durable, self-centering point, no need for center assist drilling or center punching.Portable tools you can carry around and take no space in your backpack. Ideal application Compact and portable drill bit grinding tool, use this drill bit sharpening tool with your drill press electric to keep bits sharp and ready to use. This diamond drill bit sharpener is mainly used for grinding iron drill bits, not suitable for other high hardness drill bits. Specifications: Type: Corundum drill sharpener Material: ABS plastic + brown corundum grinding wheel Color: Orange + Blue Suitable for: 5/64 "-1/2" (2-12.5 mm) iron-based drill bits Product size: 180 * 40mm * 32mm Net weight: 0.08 kg Package includes Corundum drill sharpener 1XOrange 1 X Brown corundum grinding wheel 1X wrench 1X Snap Note: this does not include Other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!