This is just a couple of bearing mounts rejiggered to fit 608ZZ (specifically 8x22x7) bearings to go with the mount by watamin here. I made this just to use bearings I already had lying around.
One of the models is pretty much the same as the original mount bit, just widened to fit the wider bearing.
Since I didn't have any M6/7 bolts handy, but piles of M3, the second has a spindle to match the bearing with an M3 sized hole through it. Needs a washer on the one end to keep the bearing in place.