- 【Size】32mm Schrader (Regular valves). Fits 20″ x 4.0″ tire tube
- 【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.
- 【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.