Add beautiful designs and detailing to your mixed-media projects, Altered art, or journals using this Marvy uchida lepen Pen set. This pack of permanent Black markers is perfect to add intricate details to your sketching, writing, and outlining work. You can create sharp, fine lines or bold lines with these pens, which come with different tips. These Marvy pens have highly-pigmented, alcohol-based ink that can be used to create vibrant lines on surfaces like glass and metal. 1 fine tip Pen 1 extra-fine tip Pen 1 bold tip Pen .