Porter Cable 43367PC Carbide Tipped Ball Bearing Pilot Edge Beading Router BitTraditional bead with fillet Ideal for matching old moldings or furniture and architectural woodwork A: Radius 3/16" B: Flute Length 21/32" C: Shank Diameter 1/4" D: Shank Length 1-1/4" E: Overall Length 2-11/16" F: Bearing Diameter 1/2"