This Retro 51 Tornado Vintage Metalsmith Rollerball Pen is an ode to Henry Gray, famed anatomist and author of Gray's Anatomy, a classic anatomical textbook. Its antique silver trim frames a labeled skeleton diagram that glows in the dark!åÊThe pen is fitted with a smooth flowing capless rollerball refill that is retracted with its patented knurl twist-top. Replace the rollerball with any readily available Parker-style ballpoint refill and your Tornado is now a ballpoint pen. You'll find the Schmidt P8126 capless rollerball refill, Retro 51 1.15mm pencil leads, and Schmidt P900 ballpoint refill for this pen in our store under Refills & Accessories.