iStarUSA TC-RAIL-26 26-Inch Sliding Rail Kit for Most Rackmount Chassis

They suck, but they work. It's a pain to remove a server from the rails, and even worse to get it back in. Sliding seems fine. On the first one I did, when putting the slides back together for the final install, the angle was slightly off and it ripped two of the bearings right out. They were not possible to reinstall, but after a small amount of bending, it seems to work fine. The second server I racked went much better. It still took nearly a dozen tries to get it to slide in properly, but nothing was permanently damaged. I installed them on a 4u rosewill, which was extremely tight but functional on my sunrack 1000, and a 4u chenbro, which required using the spare nuts inside the case, because the chenbro rail mounting holes are m6, and the istar rails cannot accomodate that.

Great. I use on a 2U istar case and 3 4U rosewill cases. A bit hard first time getting into the 4U ones. Once you take it out a few times it's so much easier. Full length of the case allows to fully slide out