Slide-in mounting rails for a Lenovo C20 computer hard drive.I needed to mount an additional hard drive into a Lenovo C20 workstation here at the office (I'm the IT guy). I was unable to loacte any of these drive mounting brackets in the aftermarket, so I modeled up a set of rails in Solidworks and printed them out. The original is a rectangular bracket with metal pins in it than snaps around the drive. My version is slightly different, and uses two 6-32 flat head screws to secure each rail to the drive. I had tons of these screws laying around, but I'm sure they are readily available if you don't have any. I think McMaster-Carr part # 90272A146 might work OK. The fit into the chassis was absolutely perfect. The latches snapped in correctly and the drive stays put.