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- 15mm), 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.