The Lewis wood drills bits are the ideal solution available for drilling through beams and rafters. The self-sinking thread tip enables precise drilling and, thanks to the sharp cutting edges, guarantees high drilling performance. The pre and main cutter are hardened so that users can expect a long service life. The Lewis helix drill bit for wood, offers proven fast chip removal. The Lewis wood drills bits are available with a hex shank. Please select your size option/s in the dropdown menu. We also have drill bits for concrete. Click here to view this range.