"ITEM IS DESIGNED TO BE TOTALLY IMMERSED BELOW THE WATER LINE TO ALLOW THE NATURAL PHENOMENA OF WATER LUBRICATION TO TAKE ITS FULL EFFECT; COMPLETE STRUT BEARING FOR THE PROPULSION SHAFT; CONSISTS OF 7 MAJOR COMPONENTS; UPPER BEARING SHELL, LOWER BEARING SHELL, FORWARD RETAINING RING SPLIT IN 2 HALVES, AFT RETAINING RING SPLIT IN 2 HALVES, 24 FORWARD BEARING STAVES, AND 32 DISK ANODES"