I've had one of these in my pencil case for years - The Uni Pin is truly an excellent fine liner! 

🖤 Superior Water Resistance

🖤 Lightproof / Non Fading

🖤 Super Smooth Ink for free flowing lines

🖤 Black Ink

🖤 Choose from 0.3 / 0.5 / 0.7 Line Widths

A superb fine line pen- every pencil case should have one!

This listing is for one pen- but you'll probably want a couple after you've tried them out! 

Made in Japan 🇯🇵