The UZI Defender Tactical Pen is made of aircraft grade aluminum and features an ultra durable carbide tip glass breaker for emergency situations. If you're trapped or if you need to get someone out of a vehicle, use the end of the pen as a glass breaker to easily escape. The pen can also be used to write with and is compatible with standard or Fisher Space pen refills. Use the pocket clip to keep the tactical pen by your side at all times. Tried and tested, UZI Tactical Pens are both stylish and able to withstand any conditions.