Matl aluminum alloy per ams 4212 or 4280; 2.154 in. Long; 3.5595 in. Min and 3.5605 in. Max od; 2 holes 0.2495 in. Min and 0.2505 in. Max dia; 2 holes 0.281 in. Dia; 1 hole 0.5605 in. Min. And 0.5615 in. Max dia; 1 hole 0.6035 in. Min and 0.6045 in. Max dia