This multi-function writing instrument combines four ink colorstypically black, blue, red, and greenwithin a single barrel. A simple mechanism allows users to select the desired color with a click. This compact design eliminates the need to carry multiple pens, providing convenience for note-taking, editing, and creative endeavors.
The convenience and versatility of this type of pen have made it a popular choice for students, professionals, and artists alike. Its ability to switch between colors seamlessly allows for clear organization and visual distinction within written work. Since its introduction, this style of pen has become a staple in offices, classrooms, and homes worldwide, offering a practical and efficient approach to everyday writing tasks.
