The perfect pen for "everyday carry". Highly sought after and used by Law Enforcement & Military personnel. Each of these Go Pens are made in the DDR facility in Forney, Texas. These pens are produced over several days via a slow process to assure the quality of the etch. Each pen is unique and a treasured collectible that will serve you for years to come. DDR only uses the Fisher Space Pen black ink cartridge. DDR knows that these pens may be used in some of the harshest environments on earth. These pens are meant to be used, get nicked, gouged, worked and relied on day in and day out.