The Guardian KT5501 offers emergency assistance, writing and self defense functions that pass through airport and train station security systems so that you can continue writing and defending yourself. The tail of this tool is hardened with a special tungsten carbide, making it effective as a striking head. The body of the pen uses 6061-T6 anodized aerospace grade materials meeting US military grade III standards of hardness. The core of the pen uses the original US Fisher outer space pen core, known for strength and durability. The well integrated design is simple but visually impressive.
•The qualities of steel with the indestructibility of tungsten
Tungsten steel hardness at over HR90 leaves a clear scratch on glass, shatters the tempered glass used in car windows,successfully providing emergency egress from the car.
•Well formed exterior
Aerospace Aluminum Alloy 6061-T6 with militarygrade III hardness from its anodic oxidation production. The product has higher strength and better corrosion resistance;
•Inner wisdom at the core
The U.S. space shuttle quality core withstands temperatures ranging from 30℃ to 121℃, lets you write at any angle (even without gravity), stores a lot of ink, and writing kept at 30℃ can be stored for 100 years.