Product Description The Gray 2 Real Touch Gundam Marker is an easy alternative to brush painting. Each Gundam marker has paint inside that is designed to go directly on the plastic model. Gundam markers come in various sizes and colors making them perfect for small detailing to paint whole parts. To use the markers, the pen needs to be shaken so that the paint inside is mixed and then pressed down on the marker time several times to allow the paint to flow through the pen nip. Since Gundam Markers are basically like paint, sometimes they need to be coated a few times for an even-looking paint job. It is recommended to let the paint cure for a few hours and topcoat it.