Applications. Suitable for Drilling hardboard, plywood, chipboard, and all natural hard and soft woods. Threaded centre point to aid accurate drilling. Outer cutting spur provides clean holes with less splintering. Special in.Lewisin. spiral flute allows for fast removal of debris and rapid drilling. Diameters 6 - 10mm have a cylindical shank, Diameters 12 - 32mm have not slip hexagonal shank.
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