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Nano Dia

$3.30



06/16/2020
Cristian G.
It's the Porsche of lead. Writes amazingly smooth and lasts forever!



11/26/2018
Mark M.
Nano Dia is really good. I bought four Uni 552 drafting pencils in 0.4 mm lead size and loaded them with the four different lead hardness grades of Nano Dia. After writing several pages, I can't decide which I like best, they all look good. This formulation works well in every grade. I'm keeping Nano Dia in all four pencils for the fun of experimentation!



01/01/2014
Catherine Mercado
By far the best lead I have ever used. Writes smoothly and rarely breaks (only happens when I have the lead out too far and am pressing very firmly). I can't use typical (Bic, mostly) mechanical pencil lead without feeling like a quality writing tool snob! I purchased my first container of 0.4 lead in January of 2010, and still have 6 pieces left!