The FJ60 Drier spacers are a much underappreciated item. Anyone who has converted their R-12 AC cooling system to a newer R-134a system undoubtedly has installed a new R-134a direr that is smaller in diameter than the R-12 varient.
These spacers allow for you to use your new thinner R-134a drier with the stock FJ60 brackets. They're two piece design is to allow the user to install them without removing AC lines.
Picture of spacers installed holding a drier firmly in place.