Available from Amana Tool, extreme coated Spektra router bits feature a micro-thin nACo ceramic coating that enables the tool's cutting features to retain their sharpness and lubricity. The company says the coating provides up to 2.5 times longer life than uncoated bits, while producing high-quality cutting results. The bits are available in a variety of sizes and styles, including spiral O flute, 2 and 3 flute plunge, and compression spiral CNC router bits.