When it comes to template work or flush trimming matching wood surfaces, these bits are the best of the best! Made of solid carbide, the Whiteside Ultimate Trim Bits offer a unique compression spiral design that allows the cut to occur on both faces of the material at the same time. This results in the cleanest cut possible by virtually eliminating any chance of tearout on the top or bottom face. This type of compression cut technology has previously only been seen in industrial grade cutters engineered for CNC machines but is now available for home shops! Take your pick from the Flush Trim, Pattern/Plunge, or the Combination styles! All of these bits are made from Solid Carbide and offer high end ball bearing guides.