Prismacolour®Turquoise pencils are professional quality pencils designed for technical and fine art drawing - sketching, portraiture, and precise figure drawing. Featuring consistent grading, strong opacity and clean eras ability. If you need to be precise, these pencils will get the job done. Made from the highest quality graphite, pick from 20 distinct degrees of lead hardness depending on the project. We’re talking 9B (softest) to 9H (hardest) if you really must know.