FS custom dual laptop drive cages for a 5.25" slot.

[Zero_Distortion]

Got these a while back through a group buy here. These allow you to use one 5.25" drive bay to install two laptop drives.

These weren't cheap. Asking $50 for the two (thats for 2 5.25" slots and you can use 4 laptop drives).

Perfect for an SFF case.