Sto-Fen Dot Line Omni-Bounce OM-B Flash Diffuser (for Canon 420EZ, 430 EZ/Achiever DZ260 / Bower SFD728N / Vivitar 283, 285, 285HV, 3700, 4600, 5600) This OM-B Flash diffuser is custom designed to fit most of the popular flash units. Sto-Fen Dot Line Omni-Bounce for the Achiever DZ260, Canon 420, 430EZ and Vivitar 283, 285, 3700, 4600 & 5600 Zoom Flashes. This unit is still in the original Dot Line Packaging. Dot Line at that time was a distributor for STO-FEN