Who says diamonds are only for jewelry? They are exquisite for creating precious artwork as well. The Uni NanoDia Low-Wear Pencil Leads are infused with nano-diamond pieces to create an unusually strong and high-quality lead. Multiple lead grades are available.
I'm a fan of Pentel's Ain Stein lead. However, I was using the 2B Stein lead in
my Lamy 2000 and it was breaking more then I could tolerate. So, I switched to
the Uni Nano Dia and, voila, breakage dropped significantly. The Nano Dia seems
as dark as the Stein, but perhaps a previous reviewer is right that this Nano
Dia is a little harder.
the lead is indeed durable. writes well. smooth, but as you would suspect,
because of their construction, the grade of the lead itself seems to be a bit
harder than whats indicated on the label.
that said, its a great lead, doesnt smudge too much and the lines are dark and
crisp. just something to keep in mind when making your purchase, if you are use
to a softer darker 2b, you may want to try the 3b instead.
Before, my main lead was the orange AIN lead from Pentel. I thought previously
that that lead was perfect as it was dark and strong. However, I was not
completely satisfied with the lead and it was not smooth enough for me. So, I
tried this lead and it was PERFECT. Now, this lead goes in all my pencils and it
is a joy to use because it is so smooth, dark, and especially STRONG!!!