Details Our most popular flexible phenolic plate set consisting of 3", 4" and 5" plates. Our most popular flexible phenolic plate set consisting of 3", 4" and 5" plates Our flexible phenolic backing plates come in a wide variety of sizes to meet your needs from polishing to sanding and grinding All AES Industries phenolic plates meet rigid technical and performance standards Made in USA; Molded Depressed Center Hole: 7/8"; Plate Thickness: .055" 3" Diameter 25,000 RPM Max.; 4" Diameter 25,000 RPM Max.; 5" Diameter 20,000 RPM Max. Our most popular flexible phenolic plate set consisting of 3", 4" and 5" plates. Our flexible phenolic backing plates come in a wide variety of sizes to meet your needs from polishing to sanding and grinding. All AES Industries phenolic plates meet rigid technical and performance standards. Made in USA; Molded Depressed Center Hole: 7/8"; Plate Thickness: .055"; 3" Diameter 25,000 RPM Max.; 4" Diameter 25,000 RPM Max.; 5" Diameter 20,000 RPM Max.