Feature:1. Prevent rider injury, destruction and injury. Safe in any season or weather conditions.2. Protect you from shocks. Riding comfortably.3. Standard highquality butyl rubber material, good air tightness.4. Good high temperature resistance, slow down aging.5. The material is durable, wearresistant and has a long life.6. Not easy to break and deform. Each inflation nozzle has a cap to hold the air.Specification:Item type: Bicycle Inner TubeMaterial: butyl rubberColor: blackValve type: Schrader ValveSuitable for: road bikes, bicycles, mountain bikes Schrader Valve models.Package List:2 x Bicycle Inner TubeNote:Size: 2.125/2.4 inches refers to the applicable size of the inner tube and outer tire.Size: 1.75/1.95 inches refers to the applicable size of the inner tube and outer tire.Size: 1.95/2.125 inches refers to the applicable size of inner tube and outer tire.Size: 1.95/2.125 inches refers to the applicable size of inner tube and outer tire.