- Replaceable pressurized ink cartridge continuously feeds ink to the tungsten carbide ball, allowing pen to write at any angle, even upside down
- Visco-elastic ink writes smoothly and dependably on most surfaces, even under water, over fingerprints, in freezing cold, extreme heat and in space!
- Stainless-steel, precision-machined socket prevents leaks and oozing, yet delivers uniform ink flow
- Ink inside the pen will not dry out before 100 years
- Capacitive stylus works with all smartphones, tablets and other touch screens
Made in USA.