Amana Tool's new RC-2252 CNC insert spoilboard router bit with scorers features a 2 + 2 insert knives design ideal for fast removal of materials over a large surface area. The unique 2 + 2 design contains two cutting flutes and two up-shear scorers for planing, spoilboards and rabbeting. Both bottom scorers will give a very smooth finish at the bottom of the cut. The RC-2252 can be used to create simulated Shaker-style MDF doors. It produces excellent results in MDF, Balsa Core, hardwood, softwood and all man-made materials. The dial inserts four ways.