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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., #49510 diameter (D) 1-1/8, Radius (r) 5/16, cutting Height (B) 1/2, shank (D) 1/2, overall length (L) 2-7/16, replacement bearing 47706, flutes 2, D1 1/2, 49510 carbide Tipped corner round 5/16 radius x 1-1/8 dia x 1/2 x 1/2 inch Shank