Rotring 600 Drafting Pencil - 0.5 mm - Black | JetPens
Rotring 600 Ballpoint White | Pen Store
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), Silver Barrel : Office Products