Product Specifications: 700C bike tubes 700x35/43C Compatible with road bike/ mountain bike tire 700X35C 700X36C 700X38C 700X40C 700X42C 700X43C ( ETRTO : 35-622 / 36-622 / 37-622 / 38-622 / 39-622 / 40-622 / 41-622 / 42-622 / 43-622) bicycle tire tubes MORE DURABLE: The road bike tube 700x35-43C is made from premium butyl rubber. It features better sealing performance, ozone resistant, anti-aging, shock absorption and electrical insulation merits Safe Bike Tire Tubes: 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 Easy To Install: 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 Package Includes: 2-PCS 700x35/43C AV32mm schrader Valve bike tubes Note: Please check the side of your tire for the tire size your bike uses 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. Package Includes: 2 pcs 700x35/43C AV32mm Schrader Valve bike tubes