Zipp Wheels Disc Valve Adapter 90 Degree BlackFeatures Two Stage Seal Design: Ensures secure, leak free contact with recessed Presta valves commonly used in disc wheels. Durable Elastomer Gasket: New synthetic gasket offers twice the holding power and 5x more wear resistance than traditional materials. Adjustable Compression: Tighten the cap to fine tune the seal and compensate for long term wear, increasing holding power up to 4x. 15 Angled Stem: Reduces stress on the valve stem during
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