Clearprint 4x4 gridded drafting vellum sheets are printed with blue fade-out lines with 4 squares per linear inch. The archival quality, strength, erasability and redraw characteristics of this 100% new cotton fiber vellum make it ideal for manual drafting or with colored pencils, markers and more. Its exceptional characteristics stand up to extended exposure to age, atmosphere, heat and light. Translucency of this 16 lb. media is achieved without the use of solvents, and the uniform surface is ideal for ink and pencil.