KOH-I-NOOR Rapidograph Technical and Artist Pen.25mm Nib, 1 Each (3165.ZZZ) Legendary pen handles like a pencil, moving in all directions without snagging or digging into the drawing surface Extremely versatile to achieve precise lines with an engraver's perfection, loose sketching style or a finely detailed pointillist technique Airtight double-seal cap keeps the stainless steel nib from drying out Refillable ink reservoir and a color-coded cap and replaceable point Made in USA