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
For its prices compared to all others, this is well-worth the buy for 40 pieces
of lead compared to the standard of 20 pieces. I had bought 2 of these, and I
may purchase more in my next order when I run out.