YunSCM 2 Pcs 20" Fat Tyre Tubes 20x4.0/4.5 ETRTO 98/102 406 Bike Inner AV32mm Valve Compatible with 20x4.0 20x4.25 20x4.30 20x4.40 20x4.50 Electric Bike/Mountain Bicycle

Heavy Duty inner tube：20''x4.0''/4.5'' AV32mm(102/114-406) 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 20x4.0 20x4.1 20x4.2 20x4 1/4 20x4.25 20x4.3 20x4.4 20x4.5 fat tires. More Air Tightness: Adopting high elasticity and high quality butyl rubber and EPDM rubber, the thickness is increased by 40%, the air tightness of the inner tube is increased by 200% compared with the ordinary butyl inner tube; the tire can continuously maintain a stable inflation air pressure state after inflation, which dramatically reduces the frequency of inflation, and the good air tightness helps to keep the pressure of the tire stable, which improves the driving safety and efficiency HEAVY DUTY- Ultra Durable: Our heavy duty inner tubes have higher puncture resistance than ordinary inner tubes, and the thicker body can withstand more friction and wear, thus extending the service life of the tube, reducing replacement frequency and maintenance costs. And in long-term use. 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. Package Contains: 2PCS heavy duty bike tubes 20x4.0/4.5 inch AV32mm Schrader Valve. Easy to install and remove, and check the valve position to ensure that it is installed in the correct direction 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.