The Frixion Waai Clicker Erasable Pens by Pilot are a set of ultra fine 0.5mm pens in five assorted colors. These pens combine the convenience of a ballpoint and rollerball pen in one, with the added feature of being erasable. The Frixion Waai Clicker Erasable Pens are ideal for precision writing and drawing tasks, making them a versatile choice for office and creative use.