YunSCM 2-Pack Fat Tyre Bike Inner Tubes 20 x 4.0 AV32mm Schrader Valve 20" Fat Tyre Tubes Compatible with 20x3.5/4.0 Mountain Bike/Bicycle Fat Tyre

Details

• 【Size】Bike tyre tube fits 20" x 3.5/4.0" AV32mm Valve tyre tubes.
• 【Installation Precautions】Please check the side of your tyre for the tyre size your bike uses.
• 【High Quality】The bike inner 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】The tube 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.
• 【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 & Safe】After replacing the butyl rubber tube, it absorbs the impact on the uneven road surface, making riding more comfortable and safe.
• 【After-sales Service】If there is any problem about the product, you can contact us, we will try our best to solve for you!