The marker uses an innovative valve system

easy refill through the back of the marker

and a variety of DIY projects

Top quality fine liner pen from Pilot

Sharpie Peel-Off China Markers is perfect for writing on glass

molotow 211em empty marker 4 mm Ink and paint refills The marker uses an innovativeEmpty pen from Molotow that you can refill with any ink or color. Perfect if you, for example, use Molotow ONE4ALL acrylic paint and would like to mix it into your own shades. Molotow's blank pens are made in transparent plastic so you easily can see what color you have in and how much is left. 4 mm nib that can be replaced when it becomes too worn or dry. See all our products from Molotow here.