High hardness drill sharpening, rustproof, strong and durable, automatic centering point, does not require auxiliary center drilling and center punching. The drill bit sharpening tool is ideal for fast drilling, tapping , etc. And the quick replacement composite cone uses the sharp edge principle. Drilling and tapping in one operation can greatly reduce processing steps and time costs, improve work efficiency. Corundum sharpener is suitable for drilling, tapping, cutting on soft metal, aluminum sheet, iron, etc. Corundum grinding has good sharpening effect, saving a lot force. Specification: Material: Corundum + ABS + Steel Color blue Package size: 19 * 8 * 4cm / 7.5 * 3.1 * 1.6in Package Weight: Approx. 121g / 4.3oz Package List: 1 * Drill Bit Sharpener 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!