Cut half-round grooves for Fluted moldings, columns, millwork and signs using a core box bit. Used with an edge guide, It can cut coves. Can be used with table-mounted and CNC routers. Perfect for making flutes on CNC machines, perfect for juice groove in cutting boards, maximum RPM 20, 000, use in a table-mounted router. Not for use in a handheld router!, #45928, diameter (D) 1-1/4, Radius (r) 5/8, cutting height (B) 3/4, shank (D) 1/2, overall length (L) 2-5/16, flutes 2, 45928 carbide Tipped core box 5/8 radius x 1-1/4 dia x 3/4 x 1/2 inch shank