Silca Hiro V3 Carbon Steel Side Lever Locking Disc Chuck

I love this so much this one is the second one I own. It's for presta only but it locks onto the stem tightly and doesn't leak. Replacing the washer is easy and actually the benefit to this is that it screws into a schrader valve adapter. I wouldn't recommend using it with a clamp on style schrader chuck. Silca sells a crimp-on clamped schrader adapter and there are many other alternatives but it has to screw on to the schrader valve stem so I don't know how practical it would be for those valves (the adapter not this chuck).

It's made very well and is solid. I use one on my manual tire pump and a battery powered compressor I will be hauling around when this pandemic crap is over.;

I bought this directly from Silva to replace the brass head on my 30+ year old Silca floor pump. Setup was simple and the seal on presta valves is tight. My big complaint is the internal red rubber making the connection gets destroyed too easily with presta valves with threads (95% have them). Perhaps I'm using it incorrectly but it seems pretty simple--put the head on the valve flip the lever to tighten and pump. When finished flip the lever to release.;

Silca products never fail to meet their #1 quality in service and products.;

Excellent product. Greatly simplifies connection of a presta style air pump supply to your bicycles' inner tube fitting. Also has provided me with a very tight seal eliminating air leakage even under higher pumping pressures. Quick Side-Lever release ensures minimum loss of air pressure when removing from inner tube fitting. One thing tough: when purchasing this item you must also purchase separately a Silca Thread-on Schrader Chuck. The threaded female portion of the Schrader chuck screws directly onto the male threaded portion of the "Hiro" chuck. The opposite end of the Thread-on Schrader Chuck is inserted into the rubber hose of your tire pump. Without the Thread-on Schrader Chuck you may find it difficult if not outright impossible to connect the "Hiro" chuck to your pumps' rubber hose. I could not find an alternate method so I ended up purchasing the Thread-on Schrader Chuck offered also by Silca.;

This is a cost down steel version made in Taiwan replacing the stainless steel one which was from USA which was a Champ. I have both of them and would tell you their performance are far apart.