Amana Tool 51405-K-5, 5-Pack Spektra Coated SC Spiral O Single Flute, Plastic Cutting 1/4 D x 1 CH x 1/4 SHK x 2-1/2 Inch Long Up-Cut CNC Router Bits with Mirror Finish

Solid Carbide Spektra™ Extreme Tool Life Coated, Plastic Cutting, Spiral 'O' Flute CNC Router Bits with special unique carbide with nACo® nanocomposite coating for longer lifetime in plastics and other materials.

The nACo micro-thin ceramic coating provides extreme nanohardness and heat resistance to the router bit. With a brilliant distinctively-tinted coloring nACo provides additional improvements in four critical aspects of router tooling.

• nACo coating is an micro-thin ceramic coating which enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality.
• Coatings prevents high heat and oxidation which is detrimental to cutting tool performance.
• Multi-colored hues, while attractive, will dissipate upon use and yet coating will remain fully effective.
• nACo offers approximately 4,500 Vickers for impressive solid hardness on cutting areas of the tool, for an increase up to 2.5 times compared to uncoated bits.