The Side-Lever Locking Chuck is classic SILCA quality and manufacturing in every detail. 100% made in the USA from fine stainless steels, 100% rebuildable, and utilizing a new, high-tech elastomer gasket design, the 254, which is already available for replacement sale and like all other SILCA gaskets, will remain available for the next 25 years and probably longer.
Full metal construction, guaranteed for 25 years and covered by SILCAShield
Can effectively seal on valve stems as short as 10mm!
Uses SILCA 254 High-Tech Elastomer gasket
Adjustable gasket pre-load allows for customizable fit on any valve as well as compensation for gasket wear
Spring loaded lever for better force management and positive on/off feel.
Bullet-proof high-pressure, disc compatible chuck for high pressure situations.
The Hiro Chuck is a finely crafted tool for those obsessed with the details as well as the experience of cycling. It is a tool which rewards knowledge and understanding of how it works, please expect to spend some time acquainting yourself with the function of the Hiro before you use it. It is not a screwdriver or a hammer, it is an intricately machined, high-precision device with very unique features and user adjustability, learn how it works and you will find great pleasure in it's operation. You will smile every time you use it and you will amaze onlookers in the track infield at your ability to achieve any pressure without holding it in place, and you will someday hand it down to your children, who will replace the gasket and use it for another 25 years. Passion. Precision. Performance