Sia Abrasives 4-1/2" x 5/8"-11 Resin Fiber Disc Backing Pad
Amazon.com: M14 115mm Thread Plastic Backing Pad For 4-1/2" Angle Grinders Sanders Discs : Industrial & Scientific
4-1/2" x 5/8"-11 Resin Fiber Disc Backing Pad with Lock Nut for Angle Grinder | eBay
Amazon.com: Elitexion Angle Grinder Ribbed Back 4-1/2 inches Plastic Pad for Resin Fiber Disc with 5/8 inch 11 Thread, Max 20,000 RPM : Industrial & Scientific
Makita Rubber Backing Pad For Use with Angle Grinders 743009-6 - The Home Depot
4-1/2" x 5/8"-11 Ribbed Backing Pad for Resin Fiber Disc (Premium)
4-1/2" x 5/8"-11 Resin Fiber Disc Backing Pad with Lock Nut for Angle Grinder | eBay