Absolutely nearly right - bearing presses for the swing arm.
My vice doesn't open wide enough to use to press in the swing arm bearings so I can now use these presses with a long bit of threaded bar to pull in the bearings straight and to the right depth
Don't worry about the dirty swing arm in the pic as I just grabbed the first one to show how they work
You wanna get another big washer on each end and sandwich a thrust bearing in between so that as you tighten up the nuts, they don't try to spin the bearings and cause drag.