2-Pack 700C Heavy Duty Bike Tubes 700X35C/38C/40C/43C FV60mm Presta Valve 700C Tubes Compatible with 700 x 35C 700x36C 700 x 38C 700 x 39C 700 x 40C 700x 41C 700C x 42C 700 x 43C Road Bike Tire Tubes

Features & details Features [Heavy Duty inner tube] 700x35/43C FV(35/43-622) Heavy duty bicycle replacement inner tube, these inner tubes are ideal for a wide range of applications.

Enhanced the ductility of the heavy load tire, so that the scope of application is expanded, Compatible with 700x35c, 700x36c, 700x37c, 700x38c, 700x39c, 700x40c, 700x41c, 700x42c, 700x43c tires.

[High quality butyl rubber] Made of high quality butyl rubber composite material, with good air tightness, heat resistance and durability.

Every product is rigorously screened before it is delivered to you.

[New upgraded thicker inner tube] The weight is 30% heavier than the ordinary inner tube on the market, and the upgrade can be seen to make the inner tube more durable.

[Excellent shock absorption ability ] The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement.

Heavy Duty butyl rubber for maximum ride comfort - upgrade your ride experience.