This is the optional MIP Ball Diff Kit for use on the Associated SC10 Vehicles. FEATURES: Steel outdrives YOU WILL RECEIVE: One Male Outdrive One Female Outdrive Two Diff Rings One 52T Diff Gear Orange Grease Clear Grease Two Thrust Washers One Diff Screw One T Nut One Thrust Cap Two 5/32"x5/16" One Diff Spring REQUIREMENTS: Installation on the vehicle cnh 10/16/09 &