Amana Tool 46460 SC Spiral Plunge with Corner Radius for Solid Wood 1/16 R x 1/4 Dia x 3/4 CH x 1/4 SHK 2-1/2 Inch Long Up-Cut Router Bit

Solid Carbide Spiral Flute Plunge with Corner Radius Router Bits for Solid Wood
Spiral 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 “up-cut” shears from the bottom up, pulling chips from the bottom up, thus allowing deeper penetration with less stress on the tool. An excellent choice for mortising.