Dual Sata SSD to Regular HDD adapter. I modified this:
to fit my needs. The source was for only 1 hdd and the screw holes to the case were too thin for me to use. I decided to make it in parts so that it might fit more cases and uses less plastic.
The extra holes allow you to pick how forward in the case you'd like it.
One SSD will be mounted upside-down. This can be used to mount 1 SSD.
The height, including screws is 3.7cm, or 1.5".