This is a Kubotan and not a writing pen

The non-slip texture of the Boker Plus Kubotan SST gives it an excellent grip and the clip offers many carry options. The 5" aluminum body is capped with a glass breaker.

The Kubotan SST was designed by Sven "Stolle" Stollenwerk, who has several decades of experience in close combat and self-defense as a paratrooper officer. A versatile tactical tool that can significantly heighten personal safety in many situations.