Nano Dia ~ yes, it really does contain millions of 'nano' diamonds per lead! The nano diamonds make this a strong lead, while the oils help improve smoothness. It makes an excellent pairing with the Mitsubishi Kuru Toga. This is one bold lead! Please note: The Nano Dia is being discontinued by Uni. If your preferred size is not available, we highly recommend Uni's Smudge Proof lead (which will be replacing the Nano Dia). Available in .3, .4, .5, .7, and .9 .3 = 15 pieces available in H and HB .4 = 30 pieces available in H, HB, and B .5 = 40 pieces available in 2H, H, F, HB, B, and 2B .7 = 40 pieces available in H, HB, and B .9 = 36 pieces available in H, HB, and B
