Freud’s Solid Wood Surfacing & Rabbeting Bit is the ideal CNC tool for routing a fine, flat surface on solid hardwood or softwood, or for routing precise rabbets along the edge of solid wood panels. The replaceable solid carbide inserts can be rotated so all 4 edges are used, providing extremely long life, even in abrasive materials. Cutting diameter: 1-1/2″, 1/2″ shank.