Schrade Tactical Black Pen can be use for both writing and as a defense tool. The overall length of this pen is 5.7”. The material used for making this tactical black pen is CNC machined 6061 aircraft aluminum. Pen also comprises of screw on/off cap which makes the pen highly secured. The pen also features screw down cap and shirt cap. The pen is offered with Hauser parker ball point pen cartridge. The color of the pen is matte black finish. One of the best thing about this pen is that it is light-weight and very convenient.