Heavy duty twist-top rollerball pen inspired by Albert Einstein. Known for developing the theory of relativity, the theoretical physicist, Albert Einstein, has left his mark in world of science and philosophy. Designed as a tribute to Einstein, this Retro 51 Rollerball pen features Albert’s famous chalkboard calculations, including the E=MC2 formula. The stainless-steel barrel is set off by stone wash accents with lacquer-printed writing and a protective clear coat.