Bic Intensity Fine classic and fun fineliners are perfect for creating, drawing, and writing. They come in eco-friendly packaging with a sturdy case that contains 20 different colors. The fineliner features a plastic tip housed in a metal casing, ensuring that the tip remains protected and intact when using rulers, stencils, or other edges. These pens are ideal for fine writing, drawing, and sketching. They are smudge-proof once dry and use water-based ink. The secure closure includes an airtight cap in the ink color that makes an audible click. The modern plastic casing is adorned with a decorative foil print and offers a wide range of 20 different vibrant, bright colors.