Chemical film finish, mil-c-5541, class 3; 4.000 in. Nom o/a lg; handle end 0.975 in. Dia; connector end 1.050 in. 0/a w; 1.050 in. O/a h; four 4-40 unc-2b mtg holes; 0.718 in. C to c between mtg holes along w; 0.718 in. C to c between mtg holes along h