A 5x2 half-height Gridfinity tray for the Iwiss SN-2549 crimping tool.

Probably also fits:

SN-28B SN-58B SN-025 SN-01BM as these seem to use the same chassis.

The tool sits about 3mm proud of the top of the tray so you can't stack anything else on top of it.

(The SN-2549 is for JST and DuPont connectors and crimps both parts of the contact at once.)

Link to the tool: https://iwiss.com/products/icrimp-sn-2549/ The gridfinity storage box pictured: https://www.printables.com/model/361829-rugged-gridfinity-box