Quickie mop and type r mophead (Adams Morgan (20009))

As pictured. Must take both.

It's a long shot - I used to be able to make this work (afix the mophead onto the mop handle) but no longer. The brand is Quickie. I had it for decades, changing mopheads periodically, and it was a superior mop because it could get in the space under a cabinet unlike most of the inferior mops now sold in hardware stores which for apartment living are overly large, bulky, and awkwardly angled. But - I have now given up on it. The mophead is barely used.