These are HD floppy disks – can be used on the PC / Amiga. For use with the Amiga you will need to cover the left-hand hole with tape.
NOTE – you are buying 10 disks. Not all 50. As per the photos – I have tested a disk in my Amiga 1200 external CUMANA floppy drive. This worked perfectly.
Contact me if you’d like to make an offer on the whole box.