Vktech New Tungsten Steel Tactical Pen Multifunctional Hollow out Self Defense Pen Made of tungsten steel, with high hardness to break the car window and glass Beautiful and fashionable appearance design, perfect for personal accessories A perfect bodyguard and companion for you while driving Suitable for handwriting, self defense, tactics and seeking survival in emergency Compact and lightweight, convenient to carry, Size: 15.6 x 0.9cm