4 x Microsoft Windows 10 Pro 32/64Bit Operating System DVD System Builder
This is for 4 licenses.

This is the English version but can be installed in any language
using the media creation tool from Microsoft and then simply using this activation key.

Can be upgraded to windows 11 for free if your PC supports windows 11.

This is a genuine system builder license and not a fake bulk or academic license,
Once installed on your PC the license cannot be transferred to other PC's.

Please note : Even though the box says 64 bit, they can be used for 32 bit also if needed.