Very solid and well built. Not sure how to change ink cartridge once its low or what kind to use. Information not provided on package.
Personally, I'm not one to carry a pen in my pocket knowing that it might fall out at the wrong turn. But this one stays. Jeans, slacks, or a suit, you can't go wrong with it. The clip is strong out of the box and unlike most pens, if it gets loose, you can adjust it. Sure, it's not a fountain pen, but I swapped out the given ink cartridge for a Fisher Space pen refill and now I love it that much more. This is something I'm glad I can carry with me when I can't take a blade. It may not cut anything, but it is better than nothing. I highly recommend this to anyone who is tired of those cheap pens that always get lost along the way.