Remanufactured Single Circuit Foot Operated Service Brake Control, Directly replaces competitive brands. Provides smooth and consistent pedal feel. Used primarily with pre FMVSS-121 Vehicles - prior to 1975. All supply and delivery ports are common. Studs Not Included. Repair Kit use part number: RN10BX Product Features:Remanufactured parts are completely disassembled and wearable parts replaced providing longer life than rebuilt partsISO 9001 and MERA member certifying repeatable processesRemanufactured in the USA