Uni Jet stream 4&1 Disney Model Limited quantity Equipped with ultra-low-friction Jetstream ink, 

this multi-function pen offers four colors (black, red, blue, and green) in one ballpoint pen and a Mechanical function pen.

color black, lead diameter:0.5mm

Ball diameter: 0.7 mm Product dimensions 14.9 x 1.8 x 1.4 cm