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Fanttik Innovation Direct via Amazon [amazon.com] has Fanttik X9 Pro 150 PSI Portable Tire Inflator on sale for $49.99 – $10 off when you apply promo code 5PQQFHIV at checkout = $39.99. Shipping is free.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.