I don’t know what it is, but I want to dislike this pen. Like actively dislike it with no real reason. It is like that person that just rubs you the wrong way but you know you need to work with them kind of dislike.But it never seems to disappoint, and it is the only pen I have used for almost a decade. The ink is smooth and dark. The barrel of the pen is the perfect length for my large hand. And the click of the pen is great for the need-to-click stimming I do. The twist of the cap to disassemble is also that perfect amount of twist for my wrists; it isn’t to short that I take it off, but it isn’t the length of a marathon.The only negative I have is the balance of the pen. It is great for side to side swinging if you grab by the clicker, but it doesn’t do tricks well because the shape of the pen puts it off balance when spun.