You need two for each bike in your collection. Double that for each bike with road & gravel wheels. Add another for each backup tube you have in all those saddlebags. Put a pair on your trainer bike's wheels: it needs to get outside now and then. What about your kids bike(s). And your partners? The N+1 bike will need at least 2 more. If you have Fillmore TL stems imagine your horror when deep in the weeds you realize your bike pump has been configured for Clik valves for months and those Fillmore stems can't accept a Clik valve. Think ahead. 16 valves and caps are probably nowhere near enough.
Replaced the presta valves on all of my bikes and have been really pleased with the conversion. First off, really easy to do. Second, the inflation rate is noticeably higher. Third, no more futzing around with stuck or bent presta valve cores.
I wanted to switch to Clik valves, but didn't want to have to buy all new pumps for our fleet of 11 bicycles. But this adapter is perfect, as it allows me to simply **** it into the ABS chuck on my Lezyne pumps to use with my Clik rigged bikes, but still have the option to use the chuck with any Presta or Schrader valves I come across. It made the difference, and I am in the process of switching our whole fleet over to Clik valves.
Turn it on, and let it settle. It displays two quick dash characters at the level of the units the readings will be in (psi, kPa, or bar). Click the tiny gauge onto the valve: it stays put. Hands free operation. Relax and set up your pump, or fill an injector with 2 sealant if the tire's going TL. No hassles like with a Presta valve. It reports the pressure in one of three units. To get to your preferred units, say psi, click the button to move through them one at a time. The pressure is accurate. You don't lose tire pressure by taking a reading. When you're done, click the gauge off the valve. Put the dust cap back on. Enjoy your ride. It's amazing. It's so easy to use you don't need much of the dexterity and strength you used to have. Tell your friends. Send a Clik starter package to each one. Get the word out.
I agreed with the reviews I read that most don’t have problems with presta valves. Once you try Clik you won’t regret it or miss anything about presta.