YunSCM 20 Inch Inner Tubes Replacement for 20x1.75/2.125 48mm Schrader Valve MTB Bike Tire/Schrader BMX Bicycle Tubes(2 Pack)

SIZE: 32mm Schrader valve (Regular valve) 20" x 1.75-2.125 Fit 20-inch wheel MORE DURABLE: The bike tube is made from premium butyl rubber. It features better sealing performance, ozone resistant, anti-aging, shock absorption and electrical insulation merits Easy To Install: Installation is quick and easy. Please follow inflation guide when airing a tire from a complete flat. Hassle free to replace your old tire tubes within minutes which is time saving and efficient Safe Bike Tires: The butyl rubber tire tube replacement absorbs shocks on bump road for a comfort and safe ride. It is heat resistant and stands wear and tear for daily use Tip: Before installing the inner tube, please put the inner tube into the water for inspection, if there are bubbles, it means that it has been damaged, you can contact us. Check the valve position to ensure that the installation direction is correct. Note: The inflatable inner tube should avoid puncture by sharp objects.