These high-impact pens are made of precision-machined 6061 aluminum and hard anodized to withstand scratches. One end features a devastating window punch that knocks out windows in one smash while the other end offers a working ball-point pen. The cap fits either end depending on which end is being used at the time. The flutes and grooves on the pen provide a secure grip even under combat situations while the high-pressure clip ensures this pen will remain where you clip it under any circumstances. Black ink.