https://www.ebay.com/sch/i.html?_nkw=3M+05643+3+1+2X15+1+2+Sand+Belt+Package+Qty+10&_sacat=0&_dmd=2

3M 05643 3-1/2X15-1/2 Sand Belt - Package Qty 10

Regular price
$319.00
Sale price
$225.00

Back Stand, Bench Top, Portable Type; Blue Color; 15 1/2 Inch; 3 1/2 Inch; 15 1/2 Length - Fractional; 3 1/2 Width - Fractional; Finishing, Cleaning, Deburring Application; Very Fine Grit; Non Woven Backing Material; Scotch-Brite[T] Brand