Disc wheel valve adaptors from Zipp.
Specifications
Synthetic elastomer gasket with 2X the holding power & 5X wear resistance of traditional gasket materials
Two stage seal design, improves sealing & stability on all presta valve stems
Adjustable compression, user can tighten the cap to increase holding power by 4X & compensate for wear
15 degree stem angle reduces stress on the valve stem from pump hose













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