The versatile No. 5 Artists' Project Set is designed to work for calligraphy, sketching, cartooning, mapping, and more. It provides a variety of tools that will help add style to any project. The set includes one standard Speedball pen holder, one Hunt crow quill pen holder, an instruction sheet, and eight different nibs: C0, C2, C4, B1, B3, B5, 102, 56, and 513EF. Made in the U.S.A. Use Speedball Pen Cleaner to keep your nibs in tip-top shape and extend their lifespan.