Aluminum oxide grainFast stock removalExcellent edge grain retentionTriple laminated construction for severe pressure applications where conventional laminated discs have too much flexExcellent for edge grinding, deburring, and weld preparation and removal, Triple lamination construction for severe duty applications where traditional discs frayQuick change backings make for fast, easy disc changes and less downtimeUniversal backings fit most major backing pad brands on the market2-ply construction is rugged enough for contoured surfaces or flat surfacesSee Accessories for?Â?àLaminated Disc Backing Pads