The listing, Xbox Game Pass for Windows 10 - (6 month) has ended.
After purchase you will receive 6 xbox pass codes for 1 month. When activated, the codes stack.
https://www.xbox.com/en-US/xbox-game-pass
1. Download and install the Xbox Beta App
2. You may need to update Windows. The Xbox Beta App will assist with the update.
3. Open the Xbox Beta App and Sign-in with your Microsoft Account.
4. Click the user profile button on the top right and select "Redeem a code".
5. Enter your code and enjoy 1-month of Xbox Game Pass on PC for free. No credit card required.
6. For more information, please visit Xbox.com/gamepass