General description A handy inverted flush trim router bit designed for copy work where the template is positioned between the workpiece and the router. This bit features a bearing for smooth operation. Technical specifications Type: Inverted Flush Trim Router Bit Shank Diameter: 1/4" (6.35 mm) Cutting Diameter (A): 1/2" (12.7 mm) Overall Length (C): 2 1/8" (54 mm) Cutting Length (B): 3/4" (19 mm) Flutes: 2 Material: Carbide Tipped