Tray to store up to 36 Nozzles, and there are indented spaces to place labels such as those from Brother label makers. You could just as well cut regular labels and use those.

Lable area ~12mm x 20mm

I printed my tray and lid on Prusa MKS3+ in PLA with a 0.6 nozzle at 0.4 layer height.

Note: the holes for the nozzles (I use V6 nozzles) are small on purpose. You can wrench the nozzles in to thread them or drill them out so the nozzles sit in the holes.