CNC Solid Carbide Spektra Extreme Tool Life Coated Bits are made by Amana Tool, the leading manufacturers of high-quality wood-cutting tools. Amana Tool 46014-K CNC SC Spektra Extreme Tool Life Coated Compression Spiral 1/2 D x 1-5/8 CH x 1/2 SHK x 3-1/2 Inch Long 3 Flute Router Bit features a nACo nanocomposite coating with an extreme nanohardness and heat resistance. With a brilliant, distinctively-tinted coloring, nACo provides additional improvements in four critical aspects of router tooling. Excellent for: Carbon-Fiber-Reinforced Polymer - Plastic Materials (CFRP), Double Sided Melamine, Laminate, Laminated Plywood, Melamine Particle Board, MDF, Oriented Strand Board (OSB), Particle Board, Softwood/Hardwood, Veneered Plywood.