Silverstone Technology RMS05-22 Tool-Less Ball Bearing Sliding Rail kit for Silverstone RM44 / RM51 rackmount Chassis, SST-RMS05-22

Contrary to other reviews, these rails do have an adjustable depth from 24" to 37". They were pretty easy to install and though the instructions could be a little better, they were good enough for me to be able to figure out how everything worked.

Good slides

If you're homelab'ing - and got a rack set up, I recommend these rail kits. It took all about 5 minutes to get the slides on, mount to my rack case, and slide it in. Super easy, and sturdy.

Bad QA, missing 2 bearing balls on one of the slides, resulting in an inability to extend inner member out of slide

The back side does not fit into my rear server rack holes. It may fit fine in more professional racks with better hole cut outs, but not my ebay 42U rack. I need to resort to widening my rack holes a little bit to fit it. It's unfortunate I need to resort to that, especially because the front of the rack has a different type of clamp that does grab on well.

This worked perfectly on both the Silverstone RM51 and RM52.

easy tool-less install to the RM52 and my server rack

Great product, super solid and smooth. I spoke with customer support to figure out an issue I was having on my end and they were very responsive, and got the issue addressed fast. I believe Silverstone as a company is worth any extra penny.