This Schrade Tactical Pen is an awesome pen that writes great while also capable of being used as a self-defense implement. The silver anodized body and cap are 6061 aluminum. The body has grooves for a secure grip and breaker tip. The cap screws securely on and off both ends. The pocket clip adds convenience for everyday use. 

Specifications
 Closed w/ Cap: 5.9"
 Open w/Out Cap: 5.25" (w/out cap)
 Body Diameter: .55"
 Weight: 1.6 oz.
 Ink Color: Black