https://www.ebay.com/sch/i.html?_nkw=3M+Disc+Pad+Ribbed+Face+Plate+Pack+Of+10+&_sacat=0&_dmd=2

3M Disc Pad Ribbed Face Plate (Pack Of 10)

Regular price
$183.00
Sale price
$122.00

Disc Pad Ribbed Face Plate, Diameter 5 In, Mounting Type Retainer Nut, Mounting Size 7/8 In, Density Extra Hard, Max. RPM 12,000, For Use With 2-1/2 In. Disc Pad Face Plate Hub, Package Quantity 10