Amana 49516 Roundover Router Bit 1/2 Radius, 1/4 Shank Carbide Tipped Radius 1/2 Diameter 1-1/2 Cutting Length 3/4 Shank Diameter 1/4 Overall Length 2-1/4 2 Flute With Ball Bearing Guide Availability: Usually ships the next business day Amana 49516 Roundover Router Bit 1/2 Radius, 1/4 Shank amro12di14sh