The marker for painting uses good color smooth alcohol type paint. The pen point is a flat core that is most suitable for detailed painting, and a good color and smooth coverage alcohol type paint is used.
I used gundam markers on my HG Barbatos Lupus Rex.. : r/Gunpla
Gunze GM400 Blurring Real Touch Gundam Marker – Trainz
Gundam Marker - GM05 - Metallic Silver
N・T channel
N・T channel
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Gundam Planet - GM05 Silver Gundam Marker
Gundam GM05 Silver Marker, GSI : Arts, Crafts & Sewing