The Side-Lever Locking Chuck is classic SILCA quality and manufacturing in every detail. 100% made in the USA , 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
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. 
Male Schrader thread fits into any Schrader chuck, or use SILCA Thread-On Schrader Adapter to fit to bare hose