2+2 Insert Carbide Knife, Rabbeting Flycutter, Leveler & Surface Planer Insert router bit complete with two cutting flutes and two up-shear scorers for fast removal of materials over large surface area. The scorer leaves an improved finish at the bottom of the cut. Utilizes 4-sided carbide inserts. Max cutting depth is 1/4". Perfect for: • Resurfacing sPoilboards using CNC • 2+2 SPoilboards contain two bottom scorers for better performance, finer surface finish and better clearance for 90° corners. • Planing large glued-up panels using CNC • Surfacing and finishing wood using timber slab machines • Rabbeting and slotting Designed for planing & rabbeting the following materials: • MDF, Plywood/Chipboard, Plastic/Acrylic • Rberboard, Balsa Core, High Density Urethane (HOU Board) • HDF/LDF, EPoxy (EPoxy Resins), Ultra-High-Molecular-Weight • Hardwood/Softwood, Polyethylene (UHMWPE) For optimal results and maximum insert life, replace inserts with optional general purpose knives (sold separately). Recommendations: For surfacing solid woods, it is recommended to remove both bottom scorers. replacement knives: use AMANA HMA-12, HCK-40 for MDF, or use AMANA AMA-12, RCK-70 for general purpose.