The basic edge-forming bit, The Corner-Rounding bit rounds an edge to a given radius. The tool is shoulder to cut a fillet. The cut can be used to ease edges, as a simple profile, or as a part of a complex one. Also known as round over, rounding over and quarter-round. If a smaller pilot bearing is used, a second shoulder Can be produced, in effect making the bit a beading Bit., #49504 diameter (D) 1, radius (r) 1/4, cutting Height (B) 1/2, shank (D) 1/4, overall length (L) 2, replacement bearing 47706, flutes 2, D1 1/2, 49504 carbide Tipped corner round 1/4 radius x 1 inch dia X 1/2 x 1/4 shank