Features1The inner tube controls the tire pressure to control the amount of friction, makes the bicycle run more laborsaving. 2Adopts high quality butyl rubber, has good air tightness, heat resistance , elasticity, aging resistance, no easy to deform. 3Can maintain the internal pressure of the tire to protect you from shocks, brings you a comfortable riding. 4With bend american valve, suitable for road bikes, bicycles, mountain bikes, etc. 5Strong bearing capacity, can increase the air pressure to bear the weight, durable to use.SpecificationItem Type: Bicycle Inner TubeMaterial: Butyl RubberColor: BlackQuantity: 2PcsValve Type: Bend ValveApplication: Suitable for road bikes, bicycles, mountain bikes, models with american valve.Package List2 x Bicycle Inner Tube