The Acantha from Maxpedition is a fine writing instrument and a durable self-defense implement. It has a replaceable Fisher Space Pen ink cartridge that is designed to go anywhere you go. This Acantha from Maxpedition features a black anodized aluminum body and cap with o-ring seals. It comes with two stainless steel end caps to suit your needs; the Lancet and TriStep. Keep it around with the steel pocket clip. The Acantha is an everyday-friendly design that doesn't disappoint.