• 20 x 1.90/2.125 CST Thornproof Inner Tubes
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20 x 1.90/2.125 CST Thornproof Inner Tubes

20 x 1.90/2.125 CST Thornproof Inner Tubes

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20 x 1.90/2.125 CST Thornproof Inner Tubes
CST rubber inner tubes are designed for use with clincher tyres and rims. These 20 x 1.90/2.125 tubes are available with a straight Schrader valve, and are extra thick to be thornproof.

Features

  • 33mm Schrader Valve
  • Thornproof
  • 20 x 1.90/2.125 Inner
  • Individually boxed