Our air fill chips are available for discounted bulk purchase. Select from 20 chips or 40 chips. With a 20 chip purchase you are buying 15 fills & getting 5 free fills =20 Fills. With a 40 chip purchase you are buying 30 fills & getting 10 free fills. Air chips can be used anytime season after season so if you don’t use all of your chips this year, you can use them the next season. Tank rentals not included.