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
Amazon.com: 3 Pieces 4-1/2 Inch 14 mm Sanding Disc Backing Pads Replacement Disc Backing Pads Sander Backup Pad with M14 Thread Lock Nut for Angle Grinder : Industrial & Scientific
1Pcs 125mm M14 Thread Backing Pad For 5 Inch Sander Polishing Machine Sanding Disc Angle Grinder Polisher Backing Pad - AliExpress
4-1/2" x 5/8"-11 Ribbed Backing Pad for Resin Fiber Disc (Premium)
7" X 5/8"-11 Resin Fiber Disc Backing Pads For Resin Fiber Disc - Benchmark Abrasives
Makita 7 in. Rubber Backing Pad for use with 7 in. or 9 in. Angle Grinders, Angle Sanders, Disc Sanders or Polisher/Sanders 192978-2 - The Home Depot
Airgas - FLESK5050 - FlexOVit® 5" Thermoplastic Rubber Backing Pad
Angle Grinder Sanding Pad 6 inch Flexible Backer Pad Hook and Loop Bac – Drilax Tools