Rotring 600 3-in-1 2 Color Fine Ballpoint Multi Pen + 0.5 mm Pencil - Black | JetPens
Rotring 600 3-in-1 2 Color Fine Ballpoint Multi Pen + 0.5 mm Pencil - Silver | JetPens
Amazon.com: Rotring 600 3-in-1 Multicolor Pen and Mechanical Pencil, Switches Between 2 Ballpoint Pen Fine Point Tips (Black and Red Ink) and 1 Mechanical Pencil Tip (0.5mm Lead), Black Barrel : Everything Else