Threaded Co2 cartridges are available at most bike shops, or even for real cheap on Amazon. Some inflators work with non threaded cartridges, but the threaded ones are more popular, and a lot more reliable in my opinion. This attachment just screws on to the end and punctures the cartridge.
How you fix your flat is your business, but I usually use patches when I’m out on the trails. Road bike tubes are pretty small, but mountain bike tubes are just too bulky for me to carry everywhere. Once you’ve made your repair, just tighten the Co2 cartridge on real tight, and you’re ready to go. When you release the Co2, the cartridge will get super cold due to the decompression. It gets so cold that it could actually burn your skin, so you should hold it with part of your shirt, or grab on to something other than the cartridge itself. Some inflators cover the cartridge to protect you.
It’s important to note that Co2 is designed to get you through the day, and you should fill your tire with normal air when you get home. The Co2 molecules can pass through your valve stem and rubber more easily than air, so within 24 hours it will likely be flat again. Check the description for everything you need to get started, and thanks for watching. I’ll see you next time.
