This 3165 Series technical pen is a reliable, high quality pen for draftspeople, 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: Available in multiple tip sizesPocket clip on capAir-tight double-seal linerSelf-polishing stainless steel pointMade of impact and chemical-resistant components