Topeak Valve Extender - 28mm BPW Electronic shifting is no longer

Electronic shifting is no longer reserved for flagship superbikes

combining cutting-edge technology and durabilityUtilizes Bluetooth and ANT+ protocols for seamless connectivity with cycling computers and smart devicesPowered by a single AAA lithium battery with an operating time of over 400 hours for extended adventuresFeatures power measurement on the left side

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while the Small fits 22

Rigid EVA foam provides shape and insulation against road shock and vibration

Topeak Valve Extender - 28mm BPW Electronic shifting is no longerMachined from durable aircraft grade aluminum alloy to conveniently extend length of two piece type Presta valves by 28mm to aid inflation. Durable aluminum alloy valve tool is designed to easily tighten or remove two piece type Presta valve cores and valve extenders. Note: To improve air seal, wrap threads of valve extender and valve core with Teflon thread tape and ensure threads are tight. Specifications Size: 3. 8 x 0. 6 x 0. 6 cm 1. 5 x 0. 23 x