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The Silca Hiro V2 Stainless Side Level Locking Disc Chuck is the gold standard when it comes to chucks. Unlike other chucks, the Hiro V2 Disc Chuck has a side level that allows for the chuck and pump to lock onto the valve stem of your disc wheel, giving you two free hands to pump up the tire. The chuck's locking mechanism makes it perfect for pumping tubes and tires to high pressures.
Silca keeps with their long history of building parts to last a lifetime, and as you may expect the Hiro V2 is completely rebuildable- allowing for replacement of the durable gasket and lever. This is truly the one and only disc wheel adaptor a racer will ever need.