CarbMate ROTAX kit, Carburetor / Fuel injection throttle body Synchronizer, for ROTAX Synchronize carburetors on V-twin, opposed 'boxer' twin or parallel twin motorcycle or aircraft engines. Adjustable resolution accuracy of 2  0.5cmHg guarantees accurate synchronization, result displayed on 9 LED panel. Powered from external 12V or vehicle/craft's 12V battery. Style/Included: TS-400 Rotax Kit, ABS instrument case with durable polycarbonate labels, fuel & oil resistant rubber hoses. Approved as a recommended tool by Rotax aviations official club ROTAX OWNER.com.