Fat Bike Tube: 20 X 4.0 / 20X3.50 - AV32mm Schrader Valve - one tube electric bike parts Tread wraps around to the

Tread wraps around to the side of the tire a bit which allows for continued traction while turning

Bridgestone Tire

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Fat Bike Tube: 20 X 4.0 / 20X3.50 - AV32mm Schrader Valve - one tube electric bike parts Tread wraps around to theAbout this item: Size: 32mm (Regular valve). Fits 20" x3. 5 4. 0" tire tube. compatible with Road bike Mountain bike Tire ( ETRTO : 90 406 100 406 ) bicycle tire tubes. Installation Precautions: Please check the side of your tire for the tire size your bike uses. High Quality: The bike tube is made from premium butyl rubber. It has the advantages of good sealing performance, ozone resistance, aging resistance, shock absorption, electrical insulation.