Two Gym Floor sanders with riders for sale. The sanders are Clarke CF 12’s with three phase motors. The riders (I have three left) are manufactured locally here by Gordon industries, using readily available components for maintenance when necessary. The two sanders have a specially designed hitch system that allows you to lift both drums simultaneously, or successively with its own lift lever. These machines have been recently gone over and are ready to sand floors! Contact Bob Schmidt at 414-254-8337.