Fanttik FANTTIK X9 Ace Mini Electric Bike Pump 150PSI Auto Stop

• Amazon now offers the FANTTIK X9 Ace Mini Electric Tire Inflator 150PSI with auto-stop, now $33.99 (list price $57.19), with promo code 6TH5XGTD.
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: Before heading out for a ride, you squeeze the tire and realize it feels a little soft, and crouching by the roadside to dig out a pump is such a hassle. This palm-sized inflator clamps onto the valve, twists on in a second, and inflates on its own once you set the tire pressure. It stops automatically when it hits the number, so you don't have to keep watching the gauge. It takes just over a minute to fill a road bike tire from zero to one hundred. The 5,000mAh battery can inflate eight tires on a single charge, so bringing it along on weekend group rides gives you peace of mind.