This 12-piece set contains Mono pencils made with superior, extra-refined high-density graphite. These pencils last a long time partly because of their point strength and extreme resistance to breakage. They also wear slowly, all the while producing smooth, dense lines when writing or drawing. The smear-proof lines created with these pencils give drawings a crisp, clean appearance. This set includes one each 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H and 4H pencils.