46420-K, Amana Solid Carbide Spektra™ Extreme Tool Life Coated Spiral Plunge 3/8 Dia x 1-1/4 x 3/8 Inch Shank

Spiral-flute bits combine a shearing action in cutting with an augering action in chip clearance. The shearing action yields an especially clean accurate cut while the augering action clears chips from the cut. The ‘Down-Cut’ cuts from the surface down leaving a smooth edge at the surface.