Schwalbe 20 Inch Tube 7A Promotion

20 inch inner tube with different types of valves.Extreme air pressure stable! The rubber compound makes it possible: less air leakage and less to pump. Extremely reliable! Quality control for safe riding pleasure: each Schwalbe tube is checked twice on air retention in the factory.Fits the following dimensions: 37-438 (20 x 1 3/8)28-440 (500x28A)37-440 (500x35A)28-451 (20 x 1 1/8)37-451 (20 x 1 3/8)In general valves can be separated into three different groups:Presta valve: Sclaverand valve, Race valve, French valve,Dunlop valve: Wood, Bicycle or Dutch valve Schrader valve: Standard, Car or Moto valveManufacturer item code: 10416310, 10416311, 10416313Valve type: Dunlop (Wood) ||| Presta (Sclaverand) ||| Schrader (Auto)Weight supplement: manufacturer information