Features:
1. Size : 32mm (Regular valve). Fits 20" x 4.0" tire tube
2.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.
3. 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.
4. 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.
5. Comfortable and Safe : After replacing the butyl rubber tube, it absorbs the impact on the uneven road surface, making riding more comfortable and safe.






