Amana - A46264-K 1/4" Down-Cut Spektra™ Spiral Router BitThis solid carbide down cut router bit, coated with Spektra nACo nanocomposite, is specifically designed for cutting carbon fiber, carbon graphite, and other tough composites. With a highly abrasion resistant carbide substrate and superior heat resistance, it delivers clean, accurate cuts while minimizing damage to materials. Perfect for CNC applications in demanding composite materials like CFRP and phenolic. Cut Diameter: 1 4" Shank: 1 4" Cut