Prisma Turquoise Drawing Lead Refill

Sold individually.

Sanford Turquoise Prisma Color 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.