are you looking for a plastic or metal one?
I myself bought a Bytecc convert 3.5 to 2.5. Its plastic but not bad. The screws it came with however; One set was perfect to attach the ssd into the plastic mount but the screws to fit the mounting kit into my case brackets were too small. I'm not particularly sure about metal brackets.
Doesn't matter; plastic or metal. I was looking on newegg; not a big selection and no overwhelming feeback on them on their either...sheeesh. Thanks for the info though.