The CH-4 M Mini Mongoose Kit is a smaller version of the standard Mongoose tire tool. This precise smaller version allows for easy mounting and demounting of smaller tube type and tubeless tires such as a 4″ rim diameter wheel. Also included in th kit is a smaller center post for use on the CH-22 Manual Tire Changer. The smaller center post allows you to mount and dismount small bearing type wheels without actually having to clamp them into the jaws of the CH-22.