Mirka Ltd is a world leader in surface finishing technology. Sand faster and longer with our new abrasive. A clogging resistant coating and the new Multifit hole configuration will let you sand without dust. Mirka’s unique approach to dust-free sanding, wet / dry sanding explains why you will find them in bodyshops all over the world. Mirka sanding discs work great for removing heavy oxidation from faded gel coat and fiberglass surfaces.