7beryllium bar, comp a type 2, 2.437in lg, 2.000 in w, 1.593 in h, 3 inserts 1 each side and 1 on end, 1.093 in dia, .687 in deep, each cham 45 by 0.030 allaround dia, secured by 4 equally spacedholes, 2-56 unc-2b .19 deep, center hole of inserts 0.250 in dia