[Ultra-low friction jet stream ink installed!]
This is a multifunction pen that combines a black, red, blue and green 0.7mm oil ballpoint pen with a 0.5mm mechanical pen.
The world’s first groundbreaking ink that has a smooth writing feel with low writing resistance.
Ink drying speeds up, reducing stress on your hands.
A twin ball mechanism prevents backflow of ink and incorporates a spring tip to prevent ink leakage from the pen tip.
Core diameter: 0.5mm
Ball diameter: 0.7mm Ink color: Black, red, blue, green