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 or grooving. Great replacement tool for woodworking.2and2 insert woodworking router bit - Shank: 12 mm - Cutting diameter: 45 mm - Carbide inserts (sides and bottom): 12 x 12 x 2.2mm - Replace inserts as needed under ASIN "B08V8PWL6S".Contains two cut flutes and two shear markers, which provide a smoother finish to the bottom of the cut than traditional two-knife cutters.Each SpeTool cutter is subjected to rigorous quality testing to ensure perfect cutting tolerance, balance and excellent running precision, good resistance to bending or damage, and gives you a more stable finish.Suitable for MDF, LDF, fiberboard, 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 bur shank FIRMLY in the collet. The clamping depth of the rod should be at least more than 1 or 2 of the rod length and it is recommended to reach 3 or 4 of the rod length. If the clamping length is too short, the rod may be twisted.