Check the listing for details. Durable Drill Bit Sharpener Grinding Drill Bits Tool Attachment Improve Accuracy. Condition: New. Listed at 25.66 USD. Extend the life of your drill bits with the General Original Drill Grinding Attachment. This durable tool quickly sharpens them back to factory tolerances. The angle adjustment gauge allows you to match the point angle of nearly any bit and even works on countersinks. Designed with a pivoting neck for simple grinding of both sides of the bit. For use with ANSI, OSHA and UL approved standard electric bench grinders or surface grinders. 3 in. alnico magnet with 50 lb. pull capacity Fits 1/8 to 3/4 in. bits Guide sleeve prevents screw wobble or disengaging from the bit, magnetic screwdriver bit tip for fastener retention Non-marking depth stop cap protects material surface Sliding, Spin-free depth stop/screw guide sleeve 1/4" quick change compatible and impact hex shank Removable 1 in. driver bit Depth collar lock Dimensions Product Height (in.) 2 in Product Length (in.) 7.38 Product Width (in.) 11 in Details Color Family Silver Drill Attachment Product Type Grinding Attachment Material Metal Power Tool Accessory Type Other Accessory Product Weight (lb.) 4 Tools Product Type Power Tool