Pros: Materials, Durability, Overall Quality
Superb self-defense capabilities.
I didn't buy these (I bought 3) to write with, but as a low profile self-defense instrument. They are just the right size for me, as I have large hands. Perfect fit. Solid. Hard. I feel better armed with one of these than with a kubotan. Nothing to explain to anyone either. Nothing to break down, nothing to rust. ROCK-solid. Sure, you can buy a "tactical" pen for 10 times (or more) the price, but I don't see why.