We really like this slim pen with a .7mm oil based ink from Pilot.  It is just a little one that you can tuck into our small notebooks, our pocket, our wallet.  And the stainless look ensures a smart look.   We can't get over how small it is just 4 1/2 long when closed!

If you like the mechanical pencil, you might also like the Birdy pen.

0.7mm ballpoint size

5.6 mm wide x 111 mm long (when closed)

Made in Japan