Long lifespan when grinding! Strong rigid structure thanks to plastic and fiberglass materials. When grinding with coarse fiber discs, you need a backing pad that is strong and heat-resistant. It also needs to be stiff so you can apply the right pressure to your workpiece. The result is the PRO Backing Pad for coarse grinding. We developed the PRO Backing Pad for grinding with coarse fiber discs of grit P50 or smaller. It is made from heat-resistant, fiberglass-reinforced plastic and has a rigid structure to ensure it is robust and durable. The pad features an angled surface so you can grip your workpiece well and grind effortlessly, time and time again.