Schwalbe No. 7B Inner Tube - 20"

20 inch inner tube with different types of valves. Especially suited for wheel chairs. 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: 23-451 (20 x 0,90) 25-451 (20 x 1,00) 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 valve Manufacturer item code: 10416290, 10400013 Valve type: Presta (Sclaverand) ||| Schrader (Auto) Weight supplement: manufacturer information