• Equipped with the unique bidirectional bolt design, the NTP31 is a multi-purposed tool which is able to pass the security screening and given the functions of self-defense in life-threatening situation and daily writing.
• Featuring a convenient and stable lockout, the slider in the unique bidirectional bolt mechanism can be skillfully maneuvered in the L-shape groove to select and retract either the pen refill or the tungsten steel tapered tip
• The hardness of tungsten steel tapered tip is measured by the Rockwell scale (89-92.5HRA), which ranks only second to the hardness of diamond.
• The rigid stainless steel clip enables the NTP31 to be easily clipped to your pocket, shirt or backpack and avoids loosening and loss of the pen.