This black aluminum tactical pen by Smith & Wesson in very well made and is more useful than a standard tactical pen as it has a small stainless steel blade built into the end. It has a heavy duty pocket clip as well. This thing wrights beautifully. Uses standard Parker refills. Product Features 7.6" OVERALL LENGTH 1.6" BLADE LENGTH STAINLESS STEEL BLADE LINER LOCK ALUMINIUM BODY THUMB STUD TWIST OUT PEN POCKET CLIP