Draw brilliant, bold lines with Pilot When you're writing directions, making signs or leaving notifications, your message needs to stick. The Pilot 100 permanent markers produce bold lines that are bound to catch the eye. The alcohol-based green ink works on almost any surface, including plastic, and the results are waterproof and non-erasable. The Pilot permanent markers 100 have a fine bullet tip that produces a 1.0 mm thick line, which is ideal for precise marking. The black and green barrels match the markers' ink colour and are comfortable to write with. This pack of Pilot permanent markers contains 12 pens, ensuring that you won't run out of markers quickly.