Inner Tube, 622-630 mm x 28 mm thru 32 mm width.
This 28 mm - 32 mm tube size fits 622 mm rims with 700c x 28 mm - 32 mm tires as well as 630 mm rims with 27" x 1-1/8" - 1-1/4" tires.
Since tubes are stretchy, they do not need to exactly match the size of the tire. Depending on stock, size shipped may not be exactly the same as listed in the pull-down menu.
Make sure you specify valve type:
Schrader valves are the same as used on automobiles.
Presta or "French" valves are narrower, require a different pump head.
Presta XL have extra long (48mm) valves for aero rims.
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