CMT 855.308.11F Ovolo Sash Bit (Female), 1-7/64-Inch Diameter, 1/4-Inch Shank 3/4-Inch Cutting Length, 25/64-Inch Radius, 2-27/64-Inch Overall Length. 2 Hi-Density carbide-tipped cutting edges for long-lasting performance on wood. Anti-kickback design to control the depth of cut and work safely. Equipped with a bearing for easy and efficient template work. Make divided light doors for fine furniture, cabinets, sash bar windows, rail & stile constructions.