Rupes 6'' 21ES 21 MK II III Easy Release Backing Plate 981.320N POLISHING TOOLS ACCESSORIES Backing Plate The friction applied by this The friction applied by this application technique causes the innovative micro granules contained in its formula to wear away against one another diminishing for a progressively finer abrasive polish allowing you to remove any irregularities on your automobile's paintwork while only abrasing the minimum required of its sensitive surface Nothing holds pads better then our Hook & Loop flexible backing plates Rupes 6'' (21ES & 21 MK II III) Easy Release Backing Plate 981 The perforations in the RUPES backing plate are designed to create air flow which helps to dissipate any heat generated by the polishing action