A few weeks ago, I got a free used Antec 900 computer case, and I like it a lot. Lots of room inside, good air flow, and easy to detach HDD cages.
Cages look like this. (Image source: http://hardwarelogic.com)
But I quickly found out there is a problem when I tried to add a couple more HDD. It uses a very long screws to fasten HDDs inside the cage, and extra screws didn't come with the case. :(
So I went to Home Depot and found matching screws:
Machine Screws 6-32 X 1. This matches perfectly :) The only downside is the screw top is not cross. But I can still use the flat screw drivers instead the square ones. So oh well…