Retro 51 Big Shot Tornado Titanium Black with Antique Trim Rollerball Pen. The finish on the hardware is antique silver to complete the look.This is a larger than standard diameter pen for the users that like a larger grip. This is a twist action roller ball pen with black ink. The pen is 5" long with a barrel diameter of .570 and is .380 at the cone. The Big Shot Tornado pens are packaged in a 1951 style box that is loaded with character. The packaging adds to Retro 51 experience.