Ohto Petit-B Needle-Point Ballpoint Pen - 0.5 mm - Pink Body

This is a very nifty small pen. When I ordered it, I thought that you had to pull on the pen to extend it somehow but it works like a pen with a very long cap. You take the pan part out and re-attach it to the rest of the body. Be careful not to twist the pen portion -- that's how you get the ink refill.

I think it's a good pen for carrying in a wallet or check book but not for penning anything longer than a short note -- the barrel is very thing and it would cramp most hands writing it for a long period of time.