Description This is a professional bike inner tube, made of high-grade rubber material, wear-resistant and shockproof, which can be used for a long time. This bike inner tube is convenient to install, without complex installation steps, saving you time and effort. Features - Color: Black -Material:Butyl rubber - Size: 10.00X8.50X5.00cm/3.93X3.34X1.97in -Bike inner tube is strictly complied with the tops production standards and the scientific design concept to enable you to save time, worry, and effort. -Wear-resistant, shockproof and anti-aging, these inner tubes are durable and practical. -Professional bike inner tire tube has a good seal performance, suitable for most road bikes and mountain bikes. -This inner tube can be used as a gift for your friends and family members, and they will need them. Bike inner tube is strictly complied with the tops production standards and the scientific design concept to enable you to save time, worry, and effort. Wear-resistant, shockproof and anti-aging, these inner tubes are durable and practical. Professional bike inner tire tube has a good seal performance, suitable for most road bikes and mountain bikes. This inner tube can be used as a gift for your friends and family members, and they will need them.