Craftsman 12-Volt Portable Inflator w/ Digital Tire Pressure Gauge for $19.99. Order online for in-store pickup at Sears to lock in the price and save on shipping. Otherwise, shipping is $6.99 for a total of $26.98 shipped. Here is a screenshot for your reference. It can be used to inflate car, truck, bike tires, sports balls, air mattresses, rafts and more. It uses a preset digital tire gauge that automatically shuts off inflator and helps prevent over inflating. This inflator comes with 3 adapter nozzles as well.