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.
Gone are the days of pumping up my track disk wheels one-handed to 120psi. The Hiro Side-Lever LOCKING Presta Chuck-Carbon Steel is my savior.
I bought a Pista Plus Floor Pump - it's great ! However, I found the standard chuck that came with the pump hard to use, so I bought the HIRO - it's much easier to use for me. I wish there had been an option to purchase the HIRO chuck as an option on my initial purchase.
Excellent presta chuck
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.