These Faithfull Router Bits are designed to meet the needs of both the professional tradesman and the home handyman. All are Tungsten Carbide Tipped, to ensure longevity of working life, coupled with a good quality finish to the work. Ovolo produces a 2 stepped rounded profile along the edge of the material. The guide pin enables the cutter to follow intricate shapes. This rounding over bit produces a rounded profile along the edge of the material it differs from the Ovolo cutter by producing a single step only. Cutting Depth. 15.8 mm Cutting Radius R 9.5 mm Shank Diameter. 1/4in FAIRB41