If you\'re looking for the ultimate floor pump upgrade, the carbon steel Silca Hiro Side Lever Locking Chuck is it.Imagine rock-solid valve-on security at 220+psi to handle and road and track situation so you can keep your hands on the pump handle and eyes on the pressure gauge – even when inflating disc wheels.If you want the easiest inflation experience possible, this is a must-have upgrade for your Silca pump.Key Features:Full metal construction, guaranteed for 25 years and covered by SILCAShield,High-pressure, disc compatible chuck for high-pressure situations.,Can effectively seal on valve stems as short as 10mm,Uses SILCA 254 High-Tech Elastomer gasket,Adjustable gasket pre-load allows for custom fit on any valve as well as compensation for gasket wear,Male Schrader thread fits into any Schrader chuck, or use SILCA Thread-On Schrader Adapter to fit to bare hose.