Good little fans, with the usual quality construction of Scythe. Ideal for SFF builds due to their smaller thickness. I use them as top exhaust fans in a Coolermaster NR200P and they work great. However, in order to use them, you will need to use custom fan pegs and not the ones included in the NR200P case (if you can't find them online, write a question here on skroutz and I will answer you, I still have the file). Alternatively, you can use zip ties or try one of the many other methods suggested online.

Anyway, to cut it short, the conclusion is that they are very good fans, just check the capacity of your case if you plan on using them in an SFF.