Individual Kit, includes two open yokes with threaded rod assemblies, 2 horseshoes, shaft spacers and collets to fit 3-1/8″ shaft x 4-1/4″ o.d. x 12-1/2″. Everything needed to remove the old and install new strut bearings. Two open yokes (included) allows you to replace the main and intermediate strut bearings (if applicable) without needing additional parts. Common bearing names are DARK (Duramax Marine) and REDFISH (Morse Rubber).