Presta valve cap

2-in-1 Presta Valve Cap & Shimano 12s Derailleur Cage Lock

This compact tool works both as a standard Presta valve cap and a cage lock for Shimano 12-speed derailleurs. Simply remove the cap, slot it into the derailleur lock pin, and you’ll have both hands free for easy wheel swaps, fixing your chain, or general maintenance.

-Fits any Presta valve stem

-Designed for Shimano 11-12-speed MTB derailleurs (possibly works on other derailleur)

-Lightweight and always on-hand — rides with you as a valve cap

-Quick to print, no supports required

-A simple but practical upgrade that keeps your bike maintenance hassle-free.