TURQUOISE DRAFT LEAD (6B) Prismacolor Tube of 12-each

This listing is for one (1) brand new tube of 12 Sanford Turquoise Prismacolor Lead - lead grade is listed in title. Turquoise 2mm lead has a perfectly graded hardness that's produced from a mixture of crystalline graphite and super-refined clay. They are designed to fit most lead holders and clutch style pencils. Lead hardness is determined by the clay to graphite ratio; harder drafting lead has a higher percentage of clay than softer sketching leads. The Conté system is a popular scale for rating pencil hardness, with 9H measuring the hardest through 9B the softest. The 2mm Sanford Prismacolor drawing leads are popular for sketching and material applications.