TIMBERLINE by Amana 170-10 TIMBERLINE BOWL,TRAY,DISH 1/2 Shank2 Flute with Upper Ball Bearing Guide Forrouting solid wood serving trays, flat dishes, shallow bowls, andsimilar objects, use this 3 in 1 specialty plunging bit. It cuts flat,smooth bottom surfaces, vertical walls, and a transition radius betweenthem, all in one pass.