Amana - A51840 5/32" Solid Carbide Up-Cut Spiral ‘O’ Flute Router BitEngineered for precision aluminum cutting, this up cut spiral O flute router bit features a razor sharp, mirror finished cutting edge for clean cuts, reduced chip re welding, and extended tool life. Its high polish finish enhances chip evacuation, preventing heat buildup and ensuring a superior surface finish. Ideal for CNC machining applications, this bit excels in cutting aluminum, brass, copper, ACM, non ferrous metals, plastics, and solid surfaces