72DZ Point Size: 3mm, Line Width: 0.80mm Features: -Pen poin.-Stainless steel for use on paper vellum or tracing paper.-Refillable and most are sold individually or in sets.-Replacement nibs for Rapidograph®.-Technical pens.-Sketching style.-Moving in all directions without snagging or digging into the drawing surface.-Loose or finely detailed pointillist technique.-Point sizes and ranging from very fine to very broad.-Made in the USA. Collection: -Rapidograph collection.