Forstner drill bit SPEED, according to DIN 7483 G, for woodworking, hardened special steel, forged drill head with patented precision shaft grinding, optimally sharpened and hardened cutting edges for extremely precise, light cuts and tear-free drill hole edges even with large diameters, centre point, low sliding friction, low heat generation, 3 times longer service life and significantly faster drilling than conventional Forstner drills, bright colour with black grooves, for all lathes and impact drills with 10 / 13 mm chuck, for hard and soft wood, coated chipboard, MDF boards, veneered wood, blockboards.