The name of this product is: "Sto-Fen Omni bounce for the Nikon SB-900", I have a Nikon SB900 so I figure what can go wrong right? WRONG. It did not fit AT ALL, no matter how I've tried. I have bought Sto-Fen Omni bounce for other flashes in the past and they fit just fine, I don't know why it did not fit this time. Here's a hint for you: If you owned a NIKON flash, most likely it comes with its own flash diffuser which works really well, there's no need to purchase this additional Sto-Fen bounce. Because I bought both the flash and Omni bounce at the same time, I found out about it afterward. Since then, I also bought the Nikon SB-700 (which is an absolute wonderful flash)it came with a difusser and 3 filters, really nice.