Resin Fiber Discs are made with heavy-duty vulcanized fiber as backing, then coated with phenolic resin and abrasive grain. The vulcanized fiber backing can provide high tensile strength to hold abrasive grain together. Resin fiber discs' flexible and durable characteristic allow maximum contact with the workpiece area. It can be found in many industries such as shipyards, construction, masonry, and carpentry. Resin fiber discs are ideal for general grinding, heavy rust cleaning, and heavy coating removal. It can be mounted on a pneumatic or electric angle grinder.