Sounds like you are looking for the mount for the small ball of your friction sway control unit. You have a couple options like the part # D320 which is a ball mount that has the mounting tab attached to the side of the ball mount platform. We have the # 3442 which allows you to weld a tab onto your current ball mount, or we have the # RP26003 which fits between the ball mount platform and the hitch ball. view full answer...