Empty 30mm pump marker with an easy-refill function at the bottom. If you are doing a lot of tags and would like to refill your marker without hassle, this is your choice. Just open the lid at the bottom of the marker and refill it with your favorite ink or paint. The marker is also made of transparent plastic so you can easily see what color you put inside and how much is left. The perfect empty marker for art, signs, and graffiti.