- Urethane Elastomer is softer and stronger
- Lasts more than 5 times longer than rubber
- Safe for all types of Presta valves, including tubeless and tubeless-conversion valves
- Will not harm newer lightweight performance valves
- Fits all Prestaflator BIG Push/pull Presta heads
- Also fits all Silca pump heads that use the 24.1 or 242 Gasket
- Sold individually
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