Threaded centre point to aid accurate drilling. Outer cutting spur provides clean holes with less splintering. Special Lewis spiral flute allows for fast removal of debris & rapid drilling. Diameter 6
- 10 mm. cylindrical shank, Diameters 12
- 32 mm. hexagonal shank. Applications Special wood bit for rapid, precise drilling. Typically used for boring clean precise holes through beams, joists, doors etc.