This is a set of 4 of the integy snow/sand conversion kit for the 1/16 traxxas e revo. They are lightly used having been on the vehicle for only a couple short trips. They work perfectly and come with everything needed for installation. I am only getting rid of them because I am going for a speed build and these are not for speed at all. It is important to note that you will have to watch your gearing to keep your temps down as these are heavier than your average set of wheels. I can answer any questions you may have.