The backing of RMC & Riken AF38M is a polyester film, with a perfectly flat surface and high strength. It can be used for both wet and dry application, and provides fast cutting and long-lasting life and reduce work time. Application of PSA Abrasive Roll RMC & Riken AF38M can be 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, which can prevent clogging and stick efficiently. PSA backed sandpaper is excellent for contour sanding without folding, especially suitable for sanding auto putty and primer. Riken Abrasives provides you 80 grit sandpaper or 80 grit sanding discs, 240 grit sanding discs and other types of sandpaper.