仏ふつ式しきバルブ

noun

Presta valve; French valve

A type of bicycle inner tube valve, thinner than the common Schrader valve, often found on road bikes and high-pressure tires.

• ロードバイクのチューブには仏ふつ式しきバルブが使つかわれていることが多おおい。

  Road bike tubes often use Presta valves.