Four upcut and four downcut flutes make the 4+4 compression bit the highest cutting-edge-count option in the compression spiral range. The eight flutes produce an exceptionally fine finish on both the top and bottom faces of the workpiece, with reduced vibration and lower per-pass surface roughness. These bits are the right choice for shops running high-speed, high-volume production on premium laminated panels and veneered materials where surface quality is non-negotiable.