Self-retracting drill for all types of wood. With the Lewis Universal Auger, Heller offers an ideal solution for drilling through beams and rafters. The self-retracting threaded tip allows for precise drilling, and thanks to the sharp cutting edges, a high feed rate is guaranteed. The front and main cutting edges are hardened, ensuring a long lifespan for the user. Another advantage: the Lewis spirals ensure the proven quick removal of chips. Additional technical specifications: Total length: 460 mm, Number of cutting edges: 1, Suitable for wood: yes, Suitable for reaming: yes, Cutting direction: right, Cutting material: chrome-vanadium steel, Spiral drill: yes.