CST inner tube size 20 x 1.90/2.125 the tube has a 48mm Schrader/American Valve and it is made from butyl rubber.
- Rim Size: 20′
- Width: 1.90/2.125′
- Valve type: 48 mm schrader
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CST inner tube size 20 x 1.90/2.125 the tube has a 48mm Schrader/American Valve and it is made from butyl rubber.
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