Remarkably versatile, these technical pens handle like a pencil, moving in all directions without snagging or digging in to the drawing surface. The stainless steel nib, ranging in size from very fine .25mm to broad .50mm, is capable of achieving an engraver s perfection, a loose sketching style or a finely detailed pointillist technique. The kit, housed in a rigid plastic case, comes complete with one Rapidosketch pen and .75 oz. bottle of Rapidograph Ultradraw Ink for paper or film.