Feature:1. The inner tube controls the tire pressure to control the amount of friction, makes the bicycle run more labor‑saving.2. Adopts high quality butyl rubber, has good air tightness, heat resistance , elasticity, aging resistance, no easy to deform.3. Can maintain the internal pressure of the tire to protect you from shocks, brings you a comfortable riding.4. With bend american valve, suitable for road bikes, bicycles, mountain bikes, etc.5. Strong bearing capacity, can increase the air pressure to bear the weight, durable to use.Specification:Item Type: Bicycle Inner TubeMaterial: Butyl RubberColor: BlackQuantity: 2PcsValve Type: Bend ValveApplication: Suitable for road bikes, bicycles, mountain bikes, models with american valve.Package List:2 x Bicycle Inner Tube