Steel, carbon, fed qq-t-830, welded or seamless, condition a/a, composition mt1010 or mt1020, enamel olive drab finish, 0.1046 in. Wall thk by 1-1/4 in. Od tubular construction w/ea end flattened, two 17/32 in. Diameter mtg holes on ends spaced 28-27/32 in. C to c on effective lg