CrazyDrill Steel from Mikron Tool achieves the best results when machining challenging materials. Its self-centering, the extraordinary cutting speeds and the highest feed rates ensure the best hole quality, outstanding surface quality and excellent tool life. This guarantees optimal cost-effectiveness when drilling. The best drill bit for steel, CrazyDrill Steel, is available from stock in the diameter range of 0.4 mm to 6.0 mm (.016” to .236”). The standard drilling lengths are 4 x d, 6 x d and 7 x d.