UNDER-CUT ROUND OVER 1/2 RADIUSRound the lower edge of a counter with the router resting on the upper surface. No need to turn the heavy material over. This tool is especially useful for “job-site” work. (To complete a full 180° bullnose on 1/2," 1," 1-1/2" or 2" thick stock, use the corner-rounding bit with the radius bearing.) Furnished with Ultra-Glide™ non-marring Delrin®-sleeved ball-bearing guide.