Item Type: Portable Drill Bit Sharpener Grinding Wheel Material: Brown Corundum Grinding Wheel Handle Material: ABS The G grinding wheel currently used in drill sharpener is brown corundum grinding wheel, so drill sharpener is mainly used for grinding iron drills. Other high hardness drills are not suitable for use, and the loss will be relatively large. 1Electric Drill Power Drive: The sharpener adopts electric drill power drive, wear resistant corundum grinding wheel, improve the bit rate. 2Applicable Drill Size: The applicable drill size of the sharpener is 5/64in-13/64in(2mm-5mm), 7/32in-21/64in(5mm-8mm) + 11/32in-1/2in(8mm- 12.5mm), the angle and width can be adjusted. 3Mandrel: Use an electric drill with a mandrel to drive tool to sharpen the drill bit and improve work efficiency. 4Wear Resistant Corundum: The grinding wheel of the sharpener is made of wear resistant corundum, which has good sharpening effect and saves effort. 5Basic Specifications: This is a light weight, small size and easy to load drill sharpener, can meet your work meets.After use, place in a dry and clean place. Do not use with harsh chemicals, which may shorten the service life. 1 x Drill Sharpener 1 x Cover&nbsp 1 x Wrench