Specially machined shaft end for maximum impact energy throughput. Centre point for precise, pinpoint starting. Multicutter head with two additional cutting edges flanking the central HM bit plate ensures very smooth running and constant borehole geometry with optimal advance performance. Additionally, HM elements are deeply embedded by high-temperature copper brazing to guarantee maximum breakout resistance. Four-channel helix allows for the best possible drilling progress through simultaneous discharge of the drilling dust via four large helix channels.

Application examples: For circular and exact dowel holes from 16mm to 30mm.