The little wrench supplied with the cores is a simple fit for core removal and insertion. Less than a minute per valve. Clik quality as always!
Quick and easy upgrade for your wheels! Aired up my fat bike's tires yesterday at 9F and no glove removal to fumble with opening the valve like I use to with Presta valves. No leakage either. I may have to make a video to share.
Click will revolutionize the industry with its higher airflow and ease of use. No more fumbling with bent presta valves!
I love this design instead of the presta design. They make inflating the tires on my 2 bikes so much simpler and faster. Per Silca Sealant, I store the stems at 6 o'clock & inflate them at 12 o'clock. One of the original valve cores failed to inflate & CLIK replaced it and donated 2 more for me. I also added 4 of the Quick Clik-on Dust Caps in the color Orange.
My wholly positive review is in this list somewhere... Since I left it, I had a valve snap, but that experience should only increase your confidence in this company and product: Clik re-engineered these with a stronger alloy to solve the issue, and provided extremely responsive and helpful customer support. (It also wasn't difficult to extract the broken core, and amazingly, the broken core held air -- I didn't even realize it was broken until after my race. Talk about fail safe.) Not something I would have preferred to have happened, but these guys stand by their product and work to make it better; couldn't ask for more.

