Zipp Valve Extender - 33mm for 303 1 Piece for Threaded Presta Valve Black Fits Brand-Claud Butler Diamond knurl pattern

Diamond knurl pattern

S Lower EC34 Weight 142 Crown Race 30 Bearing Type Cartridge Color Black S

Precision alignment markings on the cage

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Zipp Valve Extender - 33mm for 303 1 Piece for Threaded Presta Valve Black Fits Brand-Claud Butler Diamond knurl patternZipp Valve Extender 33mm for 303 1 Piece for Threaded Presta Valve Black. Zipp valve extenders for use with threaded non removable presta value tubes. For use with threaded presta (non removable core) tubes Extenders thread "over" an existing valve and do not "replace" a valve core Knurled end to keep pump from slipping 3mm hex broach in the barrel to guarantee a perfect seal when tightened Sold each