Spacer, bushing or what..do they sel them?

Every Mopar steering column I have seen (on untouched cars) have them. They helps to support the outer steering tube near the center , and help it still turn in case of column collapse due to frontal collision. Most of them , on most cars have become brittle and fallen off over the years. They are not really functionally necessary. All of the columns I have restored for my cars have had them in place. Doing the GTS column now