Our model for success for the upper claim for twist drills from Ø 2 – 20 mm. Approved patented prism reversing systems ensures top level cutting edge symmetry! NEW, basic equipment incl. shape retaining CBN grinding wheel. Quick and easy handling, proven patented reversing prism system guarantees the highest possible accuracy and cutting symmetry Sharpens twist drills, step drill bits, sheet metal drills, wood drills, two edged milling bits, HSS or tungsten carbide (also special forms) Basic equipment: BSM 20 for drills from 2-20 mm diameter, complete with CBN grinding wheel and illuminated precision optical lens, motor 0,12 kW, motor and light 230 V/ 50 Hz.