Tubo interno bicicletta antiforatura Stop-A-Flat 20 x 2.125 tubo pneumatico ciclismo

Stop-A-Flat Puncture Proof Bicycle Inner Tube. Material: Puncture Proof Foam. Material: ‎Puncture Proof Foam. SIZE:: Tube 20 x 2.125, ETRTO 54-406, RIM Width 20 mm with a tolerance of +/- 1 mm. Follow the SIZE: chart to help choose the SIZE: you need.

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