Backing Pad for LHR 15ES Easy Hook Replacement backing plate for Rupes LHR 15ES and LHR 15 Mark IIThe Rupes 5 Inch Backing Plate is a genuine factory replacement for the backing plate included with the Rupes Big Foot Random Orbital Polisher. This backing plate is designed specifically for this polisher and is not compatible with other dual action polishers.The Rupes 5 Inch Backing Plate is designed exclusively for Rupes 6 inch foam pads.Also fits the Rupes LHR 12E Duetto.