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

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