[Product specifications:]compatible with for 700X35-38-40-42-43c bicycle tire tubes [MORE DURABLE] The bike tube is made from premium rubber. It features better sealing performance, resistant, anti-aging, shock absorption and electrical insulation merits. [Product Information:]Weight: 170G/piece, Long Valve: SV48MM/A/V48L [Practical accessories] suitable for Most of Bicycles Wheels. Rim Strip are stronger and have better anti-puncture effect [Safe Bike Tires] The rubber tire tube replacement absorbs shocks on bump road for a comfort and safe . It is heat resistant and stands wear and tear for daily use. Material:rubber colour:black Package Contents: 2 * Bike Inner Tube Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.