Sealey Drill Bit Sharpener Grinding Attachment SMS01Ideal for use with any standard bench grinder, the grinding attachment provides quick and precise sharpening of 3 19mm(1 8 3 4") HSS twist drill bits with a 75mm minimum length. Features an angle gauge with four presets. Also features a rotating neck which aids grinding both sides of the drill bit. Ideal for use with any standard bench grinder, the grinding attachment provides quick and precise sharpening of 3 19mm (1 8 3 4") HSS twist drill bits with