PFERD offers a wide range of coated and non-woven abrasive tools for face-down grinding, belt grinding, peripheral grinding, surface conditioning, polishing and much more. Three different backing pad types are supplied for using fiber discs on commercially available angle grinders. GT - backing pad for optimum adaptation to contours thanks to high flexibility. According to ISO 15636. H-GT - high-performance backing pad with a lon. Fiber disc backing pad accessories, including clamping nuts and spanner wrench.