钢制自卫战术笔用于玻璃破碎多功能安全

Material: Aluminum Alloy. 
Multifunction: Tactical pens can use for defending yourself and broken glass apparatus for quickly escaping from dangerous places. 
High-strength precision rolling ballpoint pen for fluent writing. Compatible with standard refills.
Portable: These pens won't be confiscated as prohibited goods & weapons by security personnel.