Description Concept GMH Black / RFU Black, 1LT. Concept GMH Black is a fast-drying nitrocellulose-based lacquer Matt/flat topcoat, specifically designed for automotive underbody detailing. It is also suitable as a guide coat prior to sanding preparation of primers. For more information in relation to the product view the Technical Data Sheet below-https://conceptpaints.com.au/sites/default/files/content/GMH Black_0.pdf
