Matl aluminum alloy qq-a-255/6 cond t351, 3.240 in. Lg, one end cube shaped 1.100 in. Lg by 0.912 in. W by 0.990 in. H with 0.500 in. Diameter hole and 2 grooves 0.675 in. Diameter by 0.171 in. W, one groove 0.775 in. Diameter by 0.350 in. W, otherend 2.140 in. Lg by 0.623 in. Diameter with 0.623-18 unf-3a bulkhead thd 1.500 in. Lg.