DeWALT ดอกสว่านเจาะปูน เจาะคอนกรีต SDS MAX Extreme 36 x 450 x 570mm. Mod.DT9440-QZ
DEWALT SDS MAX Masonry Drill Bits feature innovative 4 cutter tips that MAXimize the hole concentricity for better fixing retention and an open-head design that channels dust into flutes for fast drilling. An elongated helix expedites mill removal, and a hardened core helps to reduce bit breakage.
Features
- 4 flute spiral with MAXimum flute entry enables faster debris removal.
- MAXimised central core enables more efficient energy transmission to the drill bit head
- Fully supported carbide head gives longer life and cleaner, more concentric holes for better fixing retention
- Open head design ensures faster drilling
