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