CNC Solid Carbide Spektra Extreme Tool Life Coated Bits are manufactured by Amana Tool, the leading manufacturer of high quality wood cutting tools. Amana Tool 46180-K CNC SC Spektra Extreme Tool Life coated compression spiral 1/8 D x 13/16 CH x 1/8 SHK x 2-1/2 " long router bit features a NACO NanoComposite coating with an extreme nano hardness and Heat resistance. With a brilliant, distinctively tinted coloration, NACo offers additional improvements in four critical aspects of the router tool. Excellent for: carbon fibre reinforced polymer - plastic materials (CFRP) - double-sided melamine, laminate, laminated plywood, melamine chipboard, MDF, OSB, chipboard, softwood/hardwood, veneered plywood. Specifications: (D) Diameter: 1/8; (B) Cutting Height: 13/16; (d) Shank: 1/8; Overall Length(L): 2-1/2; B1: 7/32; Type: NACO Ceramic Coating; Grooves: 2.