Where can I find sliding track with beveled edges like the one in this pic? They're for the sliding shelves. The bevels make the track less of a trip hazard.
I think it's being addressed wrong.I'd turn a notch in the center of wheel face and use a 1/8" x 1 1/2"-2" flat plate with a 1/4" round rod spotted to the top of it to ride in the turned groove.
Fasten the plate to the floor. DONE.