Shopper : I am guessing that it also works for the Sony HVL F43M?IAN W : Most likely as it does fit a hvl 42JOHN B : I would guess so, too. It's a friction fit. It fits fine on my Sony HVLF-36AM flash. My flash dimensions are 2 5/8" x 1 1/2". The inside dimensions of my Sto-Fen Omni-Bounce start at 2 11/16" x 1 9/16" then tapers in for a snug fit. Also being plastic, it has some give.RON L : Sorry, not sure I used it on a pentax flash
