Amana 49512 Roundover Router Bit 3/8 Radius, 1/4 Shank Carbide Tipped Radius 3/8 Diameter 1-1/4 Cutting Length 5/8 Shank Diameter 1/4 Overall Length 2/3/16 2 Flute With Ball Bearing Guide Availability: Usually ships the next business day Amana 49512 Roundover Router Bit 3/8 Radius, 1/4 Shank amro38ra14sh