Perfectly Fit: Our bicycle inner tubes fit 20 inches Fat Tire Bike Ebike Electric Bicycle. We designed the tube width specially for 20x4.0 Ebike. Others tube width fit for 20x3.5 - 4.0 bike. It is easily popped to use the tube with not enough width. The width of our inner tubes is more suitable and durable.
Valve type & length: Schrader Valve Stem for easy inflation (Regular valves); 35mm (1.38 inches) with valve core cap. Wheel Size: 20 inches
Durable: Our Bicycle tubes are made of Premium butyl rubber, so it'll durable than average bicycle inner tubes.
