Each code provides 4 xp tokens worth 60 mins each. 4 hours total of 2XP for Halo Infinite.  
As confirmed by Microsoft 343 studios, the tokens will still say 30mins, but the countdown will start at 60 mins.
https://twitter.com/HaloSupport/status/1461369372442644482

If you need larger quantities, please let me know.  Each account is limited to 60 hours of 2xp.

NOTE: To comply with Ebay physical/digital goods policy, I will physically mail out the code to the registered address of the buyer. If you want to redeem  immediately, please message me after purchase.

Thanks for looking.  Please check my other listings for other Halo Infinite codes.