Matl: tube convoluted, copper beryllium alloy no 172 strip cond 1/4h per qq-c-533, flange matl: copper beryllium alloy no 172 bar cond a per qq-c-530, gold plate 0.00010 in. Thick per mil-g-45204 type 3 grade a cl2, tin plat over gold plating per mil-t-10727, type 1 0.00020 to 0.00030 in. Thick, total length 0.834 in. Lg, 1.500 in. Dia, each flange contains 6 holes 0.135 in. Dia