Consists of box, lid, insert; holds 1.5 micro centrifuge tubes; acrylic plastic; clear; 0.500 in thick; box w/lid-2.875 in hx6.531 in lx3.531 in w; insert-1.250 in hx5.500 in lx2.500 in w; insert has 4 rows of 9 holes each 0.453 inches in dia; beta only engraved in 0.250 in letters on box