2 inner tubes 20x1.75 1.90 2.125 schrader valve america bmx kids bike

✅ inner tubes 20 x 1.75 / 1.90 / 2.125 (2 pieces)
✅ schrader valve (american)
✅ the inner tubes are made of butyl, a type of synthetic rubber that is highly elastic and at the same time airtight.
✅ ecovelò inner tubes have extreme characteristics in terms of air tightness and elasticity and can be used for a wide range of tyre sizes.