YUNSCM 20x4, 20x3, 20x2.6, 20x2.5 Fat Bike Tubes 20x2.50/2.60/2.80/3.0/3.50/4.0 Inner Tube Set with Schrader Valve 20in Fat Tube Compatible with 20 x 2.5-4.0 E-Bike Bcycle Fat Tire Tubes-4-PCS

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

• Size: 32mm (Regular valve). Fits all 20" x 3.5/4.0 tire tubes, compatible with 20x3.5/4.0 Road bike /Mountain bike Tire ( ETRTO : 90-406/100-406 ) bicycle tire tubes.
• 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.
• Easy Installation: Installation is quick and easy. Please follow inflation guide when airing a tire from a complete flat. Save time and effort, replace the old tube in a few minutes
• Installation Precautions: Please check the side of your tire for the tire size your bike uses.
• Important Note: When changing a bicycle inner tube, be sure to add a little air before installing it. This gives it form so it doesn't get twisted or bunch up which may cause a pinch flat. Inspect for an even bead of the tire to the rim on both sides.
• Comfortable and Safe: After replacing the butyl rubber tube, it absorbs the impact on the uneven road surface, making riding more comfortable and safe.