These premium threaded Co2 refill is perfect and essential for your bicycle repair kit. This 16 gram Co2 cartridge is compatible with most inflators and the best part is you will always feel prepared with this 6 pack of cartridges. <br><br>Whether you enjoy those beautiful mountain trails or zooming down city streets, our Co2 refill is perfect for both mountain bike tires or road bike tires. The light sleek design of the cartridges make for easy carry, keep them out of your way and off your mind until you need them. <br><br>Be prepared and enjoy your ride stress free, knowing that Generic Innovation has your back when you get that flat.