2 Pack 700C Bike Tubes 700 x 35C/38C/40C/42C/43C AV32mm Schrader Valve Compatible with 700x35C 700 x 38C 700 x 40C 700 x 41C 700 x 42C 700 x 43C Bike Tire Tubes

Features & details Features Product Specifications:】compatible with 700X35-38-40-42-43c 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.

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.