RIKEN RMC AF37M the backing is polyester film, with high flat surface and strength. It can be used to sand for wet and dry and has a fast sanding advantage. Used as Velcro and PSA disc, and also suitable for different curved surfaces and paint polishing. Adopting the special treated high-grade grain, semi-open strew grain technology and partial grits have a special anti-clogging stearated coating. Our 80 grit sandpaper or 80 grit sanding discs can prevent clogging and stick efficiently, especially suitable for sanding auto putty and primer. RIKEN RMC AF37M has the excellent cutting performance, Perfect sanding surface, longer-lasting with Durability. Excellent for contour sanding without folding.