Years ago while Josh was working with the Team CSC at the Dauphine Libere, he noticed one of their mechanics using the most amazing little chuck to manage the disc wheel inflation. Unlike anything he had seen before, it was all metal and used a 'lollipop' lever on the side to lock onto the valve stems in disc wheels. The mechanic explained that these were made in Japan and were coveted by all the Euro-Pro mechanics due to their scarcity. So Josh set out to improve the design and make it available to cyclists everywhere.
The HIRO chuck is ready to use when removed from the package. If you would like to learn more about features, functions and maintenance of the HIRO chuck, please visit the SILCA resource center.
The perfect solution for my TT rear-wheel disc, and for all my other Presta valve pump head usage. No other Presta valve adapter performs as fine as the Hiro. Highly recommended.
Nice piece of kit that works great. However, due to it's length and the weight of the hose it can sit cockeyed on the valve stem. I think there should be an option to buy this instead of the press on chuck when purchasing a floor pump.