[cctalk] 3.5" mounting brackets

I have mounting brackets for 3.5" disk drives in an Antec Sonata III 500 case. They're nice metal trays with mounting holes on the bottom and spring metal clips on the sides to hold them into the panel inside the case. For some reason, I have six of them, but the case has only four slots. Does anybody need them? https://archive.org/details/manualzilla-id-7235982