Blackwing PenBlackwing Pen: It's a Blackwing Pen Built with a solid, machined aluminum body, balanced weight, and an ergonomic shape, the Blackwing Pen is designed for a single line or a full page. Each Blackwing Pen features a medium Schmidt rollerball cartridge with black ink and a finely tuned click mechanism, delivering a smooth, expressive line and a hefty, satisfying click. Retractable Rollerball Pen Black ink Machined aluminum body Ergonomic "half moon"