Indispensable! Posca's PC-17K extra-broad chisel tip is designed for experts. Posca PC-17K's XXL size tip is a favorite of professionals and artists for creating large-scale artwork. Posca's extra-broad chisel tip is ideal for artists to paint large-scale backgrounds and performing live artworks, for interior design amateurs to refresh a space, a piece of furniture, fabrics or bulky objects and for professionals making signs or writing on windows. Line width 15mm, extra broad chisel tip.