Korean company Dong-A has tackled practically all ballpoint pen widths with its great Anyball line. The pen is available in 0.5, 0.7, 1.0, 1.2, 1.4, and 1.6 mm tip sizes in black, blue, and red ink colors. Quite a range for a ballpoint pen!
However, what the Anyball is most famous for is its comfortable and firm rubber grip. In fact, many pen enthusiasts end up picking apart the Anyball in order to use its grip with other writing instruments. The grip is especially popular among pen spinners, who weight their pen mods with this excellent grip. To find out more about pen spinning, check out this JetPens pen spinning video: