Is this a set?
Yes.you will receibe tow card holder.
Does the material easy to be worn out?
They are hard aluminum alloy materials that wont be damaged easily and can be used for a long time.
Is the wallet magnetic and will it get caught in the magnet on the back of the phone?
No, they are aluminum alloy and will not be attracted by magnets.
Is this wallet RFID/NFC blocking?
Yes, two wallets both have RFID-Blocking technology.
How much cash and cards can it hold?
Two wallets can hold 22 cards and 50.00 dollar