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., #47128, diameter (D) 1/2, cutting height (B) 1-1/2, Shank (D) 1/2, overall length (L) 3-7/8, replacement bearing 47706, flutes 3, 47128 carbide Tipped flush trim 1/2 dia x 1-1/2 x 1/2 inch shank 3-Flute Extra-Long