46106. Solid Carbide Spiral Plunge 1/2 Dia x 1-1/4 x 1/2 Inch Shank Up-Cut. 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.
Amana Tool SKU: 46106