849 Rollerball Pen in Red by Caran d'Ache849 Rollerball Pen by Caran d'Ache. The 849 Rollerball completes the iconic range from Caran d'Ache that began with the ballpoint pen and the mechanical pencil, and latterly, the fountain pen. Its hexagonal, aluminium body is tough yet streamlined, and the overall design is one of simplicity. It's retractable, ensuring that the well known linear design of the 849 is not compromised. It's a little fatter than the ballpoint and sports the familiar