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
Germany Original Rotring Tikky Three In One 3 In 1 Multi-function Pen Gravity Sensor Activities Automatic Pencil Ballpoint Pen - Multi Function Pen - AliExpress
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 : Office Products
Rotring 600 3-in-1 2 Color Fine Ballpoint Multi Pen + 0.5 mm Pencil - Black | JetPens