Sait-Lok-R?âòÀÞ?â Nylon screw threaded hub for easy mounting to the backing pad.Premium ceramic blend.Highly resistant open structure allows for very fast removal of surface contaminants.Very aggressive material removal.Exceptional performance for removing paints, sealants, rust, scale and varnishes., Constructed of large nylon filament, providing an open, non-loading surface.Utilizes coarse ceramic blend grain for rapid removal of surface contaminants, while producing fine finishes.Backing Pads for Non-Woven Discs are available in Accessories.