The Retro 51 Tornado Big Shot rollerball pen has a larger diameter barrel than the standard Retro 51 rollerball and Tornado rollerball pen designs. However, while the Retro 51 Tornado Big Shot pen is wider in diameter, it still accepts a "Parker style" or Schmidt Short Capless rollerball refill.
Retro 51 Tornado Big Shot rollerball pens are packaged in a Retro tube gift box.