Description The Retro 51 Tornado Pencil in Stealth, is a 1.15 mm pencil that operates with a simple twist of the top and has a huge eraser on top for those of us who make an occasional mistake. The Stealth Pencil has a matte black lacquer finish over stainless steel, with matte black trim. They are just as easy to use as their rollerball cousin, and come with a generous supply of extra lead and erasers.