A value-priced tube that’s great to carry as a spare.
- Fits 27 x 1 1/4 or 700 x 32-35 road bike tires.
Bicycle tubes are valve-specific. Presta – narrow, with a built-in valve cap that you loosen when pumping up the tire and tighten again afterwards. Schrader – wide, with a pressure valve similar to those on a car tire.