The solid construction of this carbide-tipped bit reduces vibration, and its three-flute configuration produces a very smooth cut. Intended for use in a standard router., #47304, diameter (D) 1-3/32, angle (a°) 30°, cutting Height (B) 7/16, shank (D) 1/4, overall length (L) 2, replacement bearing 47716, flutes 3, D1 16mm, 47304 carbide Tipped bevel laminate trim 30 deg X 1-3/32 dia x 7/16 x 1/4 inch Shank with ball bearing 3-flute