BWSHLF 29 Inch Bike Tube (2 Pack), Mountain Bike Inner Tube, MTB Bicycle Replacement Fit 1.75-2.3, Schrader 35mm - 29 AV-35 2pack

• High-Quality Rubber Material: Different from ordinary inner tubes, we use 60% high butyl rubber. The air tightness of this high-quality rubber is 8 times that of natural rubber, and it is not easy to break due to temperature changes. The conventional sidewall thickness is 0.8~0.95 millimeter, but our sidewall thickness is 1.1~1.2 millimeter, which is thicker than the sidewall on the market and is more puncture resistant Various Sizes:29x1.75-2.3.F/V Presta Valve 48 millimeter. 29 means our bike tubes fit 29 wheel (pls kindly confirm that your bike tire is suitable before you buy), width between 1.75-2.3 inch tire. Standard 35 millimeter schrader valve suitable for most mtb inner tubes Vulcanized Tubes: Each of our inner tubes have passed a strict 100% quality control inspection. And all tubes are round cured to ensure uniform roundness and better reliability. After explosion-proof and inflation tests, our quality control can give you 100% peace of mind Design: The exquisite carton contains two inner tubes for easy replacement and storage Please note: All inner tubes need to be put into the outer tire before inflating, so that the outer tire will protect the inner tire from exploding. If you have any questions, please do not hesitate to contact us. BWSHLF will provide you with the most satisfactory solution