TACPEN1-B. Tactical Black Twist Pen with Extra Refill Tactical Black Twist Pen with Extra Refill. This pen has a black finished textured aluminum body for easy grip with glass breaker tip and a pocket clip for easy carry. It has a retractable pen tip, twist to open and close. Writes well and comes with a replacement pen ink cartridge. It can be used in a self-defense situation to jab or stab. Pen Measures 6 1/4 x 1/2 Price: $5.68 Unit: Each Quantity: