2 Pack - 20x4 Fat Tire Self Sealing Bicycle Tubes - Heavy Duty E-Bike Tube

2 Pack - 20x4 Fat Tire Self Sealing Bicycle Tube - Schrader Valve - Heavy Duty E-Bike Tube Electric Cruise Company - Based in San Diego, California We have developed our own HEAVY DUTY bicycle tube designed specifically for EBIKES. These are the BEST BIKE TUBES FOR EBIKES AVAILABLE! 20 x 4 in. bike tubes for fat tire bikes  Best 20 x 4" inner tubes available  Self sealing bike tubes for fat tire bikes - 20x4 self sealing bike tubes for bikes and ebikes  Bicycle Inner Tube Two Pack For 20 inch wheel and 4 inch tire Schrader Valve - 40mm stem pre-filled with non-toxic anti-puncture sealant 1.4 mm tube thickness - extra strength for heavy ebikes expected lifespan of 2-3 years of use, 5 year shelf life