Asura2sec CO2 Tire Inflator for Presta and Schrader Valves Includes Sleeve Starter Kit with 4 Cartridges

I was looking for a co2 inflator that came with cartridges, most of them do not, but didn't want to pay more than $20. This was perfect.I tested it out and it is super easy and simple to use on Presta valves. No idea about Schraeder but for Presta it is a breeze.Steps are as follows:-Ensure the valve is closed-Screw in co2 cartridge-Place over Presta valve and screw on-Open valve and fill tire-Wait until it warms up or use gloved fingers to close valve and screw off the Presta valveI really didn't see a need for the sleeve as once it is screwed on the Presta it will hold in place. I inflated a 700cm x 25 tube and tire and the 1 cartridge got it to over 50psi at room temp, so more than enough to get you home or such.Worth noting it gets really really frozen once you release the co2 so you def don't want to be holding this with bare hands.But overall this thing is great, toss it in a small bag with a tire lever and a spare tube and you're good to go.

The sleeve is tough to get on, wish it came in a case or holder

Hope I never have to use but nice to know it's on board. 🚴🏼‍♂️✌😷

This little gadget is so cool and fun to inflate tires. Its good for any small tire. I used it on my bike tires and my wheel barrel tire. I like the control knob allowing one to decide how much air is needed. Great touch adding a confortable slip on/off foam to keep ones hands from freezing from the c02 chemicals. I hope this product stays on the market, well done to the inventer.

Used the first day riding after receiving item. I rode over a rock that punctured my rear tire.After replacing with new tube and getting tire back on the rim, this tool pumped it up solid. Was back on rode in 15 minutes!Not sure how close I was to filling replacement tube to 110 psi. though. I assume 1 cartridge for 1 flat.Note to self: Add a pair latex gloves to prevent chain grease on hands getting on white handle bar wrap and CLOTHES! That stuff doesn't come off!

It get easily empty.

I had not the chance to use it yet, but i'm very please to have something that can help me in my rides.

I run tubeless on 4 of my bikes and this valve is really useful for when my tires burp off some air occasionally or I get a significant puncture. I would have taken 1/2 star off becausebthe valve is fairly hard to rotate open and close. I like the foam insulating collar as the cylinder can get pretty cold when inflating the tire. A necessary gadget.