Introducing the specialized air tool 25g c02 mini kit this small compact and handy kit is everything you need to fix a flat tyre from a 26 to a 29mountain bike tyre the kit easily fits to your seat post and can fit to posts of 272mm or 316mm the silicone body of the mount holds 25g cartridge 90 degree head and 2 sided tyre lever on the front of the mount is a small plastic clip which is ideal for holding glueless patches