This 3165 Series Technical Pen is a reliable, high quality pen for drafts-people, designers, engineers and more. For use on paper and drafting cloth, it is for universal use with drawing and specialty inks. Professionals and students alike will appreciate the long streamlined holder, which provides good balance.Details:0.25 mmCap has a pocket clip and air-tight double-seal linerSelf-polishing stainless steel point