Sto-Fen Omni-Bounce OM-B Flash Diffuser (for Canon 420EZ, 430 EZ/Achiever DZ260 / Bower SFD728N / Vivitar 283, 285, 285HV, 3700, 4600, 5600) Sto-Fen Omni-Bounce for the Achiever DZ260, Canon 420, 430EZ and Vivitar 283, 285, 3700, 4600 &amp; 5600 Zoom Flashes.