Easy and pretty much universal adapter to fit two 2.5" drives in the same slot as a 3.5" drive. This allows you to fit twice as many drives in old cases that didn't have 2.5" mounting holes, like the one I'm using for my NAS. The drives have enough room to breathe on all sides and are also separated so they don't release their vibrations into one another. I also added a front intake to blow across them so they are cooled even more, and none of the adapters even became slightly deformed.
The adapter is currently very thick and sturdy, I might see how much thinner I can make it before the heat generated from the drives melts it.
The author marked this model as their own original creation.