Aluminum alloy, qq-a-200/3, composition 2024, temper t3511; 2.000 in. Min and 2.005 in. Max id; 2.249 in. Min and 2.250 in. Max od; 1.105 in. Min and 1.109 in. Max o/a w; hard anodize per mil-a-8625, type 3, cl 1; 0.500 in. Wall thk; 33 internal spline teeth, penetrant inspect per mil-i-6866, type 1, method-a