Tactical Black Pull Cap, Glass Breaker Tip Pen with RefillColors Avail: Black, Silver Important Note: This tactical pen is legal to carry anywhere you go whereas pen knives do have restrictions in some areas and states. Tactical Black Pull Cap, Glass Breaker Tip Pen with Extra Refill. This is a real writing pen with 2 pointed tips. One can be used in a self defense situation to jab or stab. The opposite end has a glass breaker tip. Pen Measures 6 1 4' x 1 2