4 / 8x310 mm
- Highest drill speed thanks to reduction in friction and improved impact transmission thanks to the special cutting geometry on the chisel-shaped drill head.
- Stable and durable centering point for high-precision spot-drilling
- Power breakers cause micro tears in the material for a noticeable quicker drill progress
- The probability of snagging on concrete reinforcements is significantly reduced thanks to enlarged armouring phases.
- The 2-spiral helix with its large geometry with reincorced core ensures quick delivery of bore dust and maximum breakage resistance
- For use in concrete, masonry, natural stone, granite