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Fits 1936-1940 Knucklehead, 1941-1965 FL Panhead, 1966-1984 Shovelhead, Cylinder base wrench, 5/8" on both ends (OEM 12050-30, 94585-30)
Installation and removal of cylinder base nuts can be a pain when you try this with standard inch size tools. These special shaped wrenches are replicas from the OEM special tools and a professional solution for the problem.