Amazon.com: Mercer Industries 324007-7" x 5/8"-11 Backing Pad for Semi-Flexible Discs : Everything Else
Superior Pads and Abrasives BP70 7 inch Angle Grinder Backing Pad for Resin Fiber Disc with 5/8 inch-11 Locking Nut: Amazon.com: Tools & Home Improvement
Amazon.com: LTEFTLFL 7 Inch Angle Grinder Backing Pad for Resin Fiber Disc for 5/8 Inch -11 Locking Nut : Industrial & Scientific
125*22mm Yihong Xlock Fiberglass Backing Plate Fiber Disc as Base of The Flap Disc Making for Angle Grinder - China X-Lock Fiberglass Backing Plate, X-Lock Fibre Discs | Made-in-China.com