Our clean and strip disc use silicon carbide mineral is combined with non-woven nylon fibres using resin. Silicon carbide is a very sharp synthetic mineral commonly used in low-pressure applications like paint prep. The resin bond strengthens the disc and gradually breaks down to reveal new fibres and sharp mineral – delivering a consistent cut over the life of the abrasive.
link:https://www.renwa-abrasive.com/coated-abrasives/clean-and-strip-disc.html