The Boker Plus Companion Commando Pen was designed by David Cyr and Kevin Passon, and is made of lightweight, yet strong aluminium. This robust tactical pen is compatible with the Lamy M-22 refill, and can be used as a bottle opener in addition to its function as a pen that can be accessed by unscrewing the tip. The fluted black handle has a very pleasant grip, and also contains a loud emergency whistle by unscrewing the cap. Thanks to the sturdy clip, the Companion Commando Pen is always at hand. Overall length: 6.10″. Weight: 1.7 oz.