This professional face milling cutter is not only perfect for smoothing wood panels, refinishing or planing the top of the spoiler but also for trimming and carving / grooving. Great replacement tool for woodworking. 2+2 insert woodworking router bit - Shank: 12mm - Cutting diameter: 45mm - Carbide inserts (sides and bottom): 12 x 12 x 2.2mm - Replace inserts if needed under ASIN "B08V8PWL6S". Contains two cut flutes and two shear markers, which provide a smoother finish to the bottom of the cut than the traditional two-cutter cutters. Each SpeTool cutter is subjected to rigorous quality testing to ensure perfect cutting tolerance, balance and excellent rotational precision, good resistance to bending or damage, and gives you a more stable finish. Suitable for MDF, LDF, fibreboard, plastic, plywood, hardwood, softwood, etc. Use on CNC and other automatic routers as well as portable and desktop mounted routers. As a woodworking engraving machine, dipping machine, etc. Attention: Please fix the cutter shank FIRMLY in the collet. The clamping depth of the rod should be at least more than 1/2 of the rod length and it is recommended to reach 3/4 of the rod length. If the clamping length is too short, the rod may be twisted.