Whether you need to write a note or break through glass our Smith & Wesson� Tactical Pen is just the tool for the job. This 6� black pen is made from 6061 aircraft aluminum and has a pocket clip patent pending spring loaded window punch and a twist cap. For replacement refills it uses Schmidt P900M Parker Style black ball pen refills. - 6 overall length and weighs 1.9 oz - 6061 aircraft aluminum - Uses Schmidt P900M Parker Style Black Ball Point Pen Refill - Patent pending spring loaded window punch and twist cap - Pocket Clip