This listing is for a complete set of Mad Catz MMO 7 Mice. They came in 4 different colors. These are brand new unused collector and display quality mice. I have several sets of these in my collection which is the worlds largest and most complete of the original mad Catz gaming mice. There is a picture of the whole collection in this listing, if interested in more than the 4x mmo 7s just let me know and we can work something out.