3 superb aluminum throttle arms designed for MDS carburettors. The 6 or 7mm internal diameter means that they will also retrofit many other manufacturers carburettors or can be drilled out to suit. The unique design allows the arm to be installed either way round so they can be used for all applications.The linkage hole is 2mm, 14mm from center. There is sufficient arm length for other linkage holes to be drilled.