https://www.ebay.com/sch/i.html?_nkw=3M+5114401745+7In+X+7+8In+Fibre+Disc+318C+16&_sacat=0&_dmd=2

3M 5114401745 7In X 7/8In Fibre Disc 318C 16

Regular price
$182.00
Sale price
$122.00

Features Abrasive type - Coated. Disc diameter - 7 in. Abrasive material - Aluminum oxide. Grade - Very coarse. Grit - 16. Maximum rpm - 8600. Backing material - Fiber. Center hole size - 7/8 in. Color - Brown.