what do you call these parts

ok, so you guys think one of these insert bearings would do the trick for me. I hope so. I just got a PM back from the guy on ebay who has the coupler rebuild kit and he is asking $28.00 for the plastic piece and another $7.00 for the metal ring that goes on the end of the shaft. I would be much better with the insert bearing and a whole lot cheaper doing it that way. let me know what you think. Bill