Step drill bit HSS, spiral fluted with split point
4,0 - 12,0 mm / 4,0 - 20,0 mm / 4,0 - 30,0 mm
The CBN ground and spiral flutes guarantee quiet running and high cutting performance. Especially the chip flow is optimized, so even long, non-breaking chips will be removed easily. The optimized chip flow protects the cutting edges and reduces built-up edges and cold weld marks. The cone makes it easier to withdraw the tool from the material.
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