Amana - A51648 1/2" Cut Diameter Upcut Router BitThese Amana bits will produce clean, smooth cut edges in acrylic and other plastic materials. Cut Diameter: 1 2" Shank: 1 2" Cut Length: 2" Overall Length: 4" Flute Type: Upcut No. of Flutes: 1 The bits are made according to strict tolerances from an exclusive high quality carbide grade and polished to a mirror finish using Amana's unique process. The upward spiral geometry will eject chips up out of the cut where they can be collected by a suitable