This fitting kit suits all later day 1.25" and 1.5" twin carb set ups where the balance rods between the carbs required are equal length (2.25"), some early carbs had the balance bar with a triangular plate that were a shorter length. The kit has the original type abutment bracket that fits to the inlet manifold to guide the accelerator cable.2 pairs of throttle and choke rod levers and a seperate lever for the accelerator cable. The course thread UNC bolt is for the abutment bracket to manifold but will have to be shortened to the correct length for all our late type manifolds. One lever is also supplied for throttle lever.