Matl steel per ams 6415; length 20.238 in.; first end shaft stepped from 4.5 in. Od to 3.3125 in. Od; second end shaft stepped from 4.5 in. Od to 3.123 in. Od; first end 14.427 in. Long, second end 3.75 in. Long; includes part numbers 91865 and 42117