Designed for hobby, student and office use, the Twin-Tip ProMARKER provides solid vibrant coverage with smooth color transition. It has a broad chisel nib on one tip and a rounded bullet nib on the other. These value-priced studio markers feature high performance alcohol-based, permanent inks in contemporary colors. The secure click-fit caps prevent markers from drying out. Both the 10- and 12-color sets contain a FREE black fine liner pen. The 10-color set also includes ten sheets of bleed-proof paper and a step-by-step guide.