A set of 12 coloring rollerball pens, can be used in drawing, coloring ,writing, office, school, family, etc .Fitted with a built-in precision ink output regulator,ensure that the liquid ink flows uniformly, offering you a flawless writing experience.Colored Rolling ball fine-point smooth writi writing distance of up to 1400m! Additionally, the transparent pen barrel allows you to keep an eye on the ink supply.Boasting a precision tip and smooth writing ink that won't leak, the rollerball multicolored ink dries rapidly, assisting you in maintaining tidy work.Suitable for use in the classroom, marking various words and making some crucial notes. It is an outstanding gift for home, office, company, students, class, and so on.