Use this bit for template or pattern work where the workpiece is unusually thick. The Two-Flute configuration cuts fast and produces a smooth finish. For a superior finish, Use the three-flute version. Twin bearings on selected tools provide better contact with reference edge and more stability in the cut., #47131, diameter (D) 1/2, cutting Height (B) 2, shank (D) 1/2, overall length (L) 4-5/8, replacement bearing 47706, flutes 3, 47131 carbide Tipped flush trim 1/2 dia x 2 x 1/2 inch Shank 3-Flute Extra-Long