Quick Summary
This YunSCM pack contains two 28/29-inch bike inner tubes with FV48 mm Presta valves. Check the full tyre-size marking before choosing, as the broad 28/29-inch label alone does not confirm fit.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Pack quantity | Two inner tubes. |
| Valve | FV48 mm Presta valve; check that this valve type and length suit your wheel. |
| Stated size | Described as 28/29-inch. Confirm the full tyre-size marking against the tube specification. |
What to Compare Before Buying
Check the size printed on your tyre sidewall against the exact size specification for the selected tube. Do not rely on the 28/29-inch description alone. Also confirm that your wheel uses a 48 mm Presta valve.
Setup and Correct Use
During installation, check that the valve is positioned in the correct direction. The product information describes checking the tube in water before fitting; bubbles indicate damage. Keep the tube away from sharp objects that could puncture it.
Before You Decide
Confirm the exact tyre-size match and FV48 mm Presta valve, and check that a two-tube pack is the quantity you need.
