Product review (3 stars): Poorly engineered plastic but I have an EXCELLENT inexpensive solution
When the tabs break off and you are considering buying one of these, here is an alternative, do-it-yourself, and very inexpensive EXCELLENT solution.  Use a zip tie!  Thread the retaining end on the inside of the adjuster, through the center, around one side of the wheel and if you leave it just slightly loose, the wheel will still roll.  Now you don't have to worry any about tabs breaking off anymore, those zip ties will hold.  Plus, it costs you just a few cents for a longterm solution.  Good Luck!!