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Amazon.com : Kenda 700 x 20-28 Presta Valve Bicycle Tube (1 Pack, 700 x 20-28, Presta, 80mm) : Sports & Outdoors
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Amazon.com : 2 Pack - Tube, 700x20-25 (27x1), 48mm Schrader Valve. Replacement Tube for Fixie, Single Speed, Road or Hybrid. Works on Any Bike with Same tire Dimensions and Valve Type. :
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