The Roman Ogee Bit, which has a convex curve coming off the bearing, produces the reverse of the Ogee (it isn't an upside-down Ogee). the curve starts at the top as a concave, and fairs down into a convex curve. Use in a handheld or table-mounted router., #49207 diameter (D) 2, radius (r) 3/8, cutting height (B) 1, shank (D) 1/2, overall length (L) 3, replacement bearing 47706, flutes 2, 49207 carbide Tipped Roman Ogee 3/8 radius x 2 inch dia X 1 inch x 1/2 shank