https://www.ebay.com/sch/i.html?_nkw=3M+777F+Cloth+Belt+777F+4+In+X+132+In+60+Yf+Weight&_sacat=0&_dmd=2

3M (777F) Cloth Belt 777F, 4 In X 132 In 60 Yf-Weight

Regular price
$794.00
Sale price
$585.00

3M Cubitron coated 777F sanding belt uses ceramic as the abrasive material. 3M incorporates this ceramic material into the sanding belt forming a grit of 60. This particular 3M sanding belt is 4 in wide by 132 in long. This item is on a cloth backing, YF weight.