Amana 49521 Roundover Router Bit 7/8, Radius 1/2 Shank Carbide Tipped Radius 7/8 Diameter 2-1/4 Cutting Length 1-1/4 Shank Diameter 1/2 Overall Length 3-1/16 2 Flute With Ball Bearing Guide Availability: Usually ships the next business day Amana 49521 Roundover Router Bit 7/8, Radius 1/2 Shank amro78ra12sh