This product is either discontinued or we cannot get that from suppliers.
Qnap SP-TS-TRAY-WOLOCK HDD Tray Without Lock/Keys, Black, NAS Accessories, Drive Bay Adapter, Expansion Bays-1, 2.5" / 3.5" Bays-1, FF Internal.
The black HDD Tray for 2.5 & 3.5" HDDs from Qnap comes with 6 black flat-head machine screws for 2.5" HDDs and 8 silver flat-head machine screws for 3.5" HDDs.