Nothing brings accuracy and efficiency to a woodworking project like flush-trim router bits. But when your template routing project involves plywood, you need a router bit designed with plywood in mind…you need Ultra-Shear Spiral Compression Flush Trim Bits. Up-Cut bits evacuate the shavings most efficiently, but can chip the top edge of the cut in plywood and other man-made materials. Down-Cut bits leave a beautiful edge on the top surface, but can tear out the bottom edge. Our Compression Bits combine the best of both. The first 3/8" is up-cut with the remaining cutting length down-cut. The shearing action is always toward the center of your material. Twin bearings mounted very close to the cutting edge guide your cut along a template or substrate material.