Aluminum, 3.188 in. O/a lg, 4.438 in. Od. Large end, 2.406 in. Od. Small end, with 1 hole 1/2-20 unf female, o ring rubber 0.063 in. By 0.344 in. Id. By 0.531 in. Od. O ring 0.063 in. By 1.938 in. Id, by 2.063 in. Od. 2 felt strips 0.125 in. By 0.250 in. By 5.375 in. O/a lg