Cove Router Bits,2 Flute With Ball Bearing Guide, 5/8" Radius, 1-5/8" Diameter, 11/16" depth, 1/2" shank. Not guaranteed due to extreme diameter and radius. For best results it is recommended to use a smaller radius bit or chamfer the material prior to using these large radius tools. Tool life will be prolonged and a smoother finish will result.