Stop & Go 1090 Automatic Tire Inflation Kit Each of these four threaded Steel canisters contains 16 grams of 100% pure high velocity CO2 gas A fully dressed Touring motorcycle tire may take all four canisters to reach 24 - 32 lbs. Of pressure (depending on the size of the tire) For use on motorcycles, ATVs, Golf carts, lawnmowers, and small utility tires Includes: four CO2 canisters, tire valve adapter with brass Fittings, full instructions, compact zippered pouch (5" x 3.5" x 1") Caution: wear gloves to avoid Frost burns