The T461 fine grit paper disc features a waterproof C-weight paper backing that resists curling, cracking and chipping in humid work environments. Equipped with a silicon carbide abrasive that provides sharp, fast cuts in wet applications, the disc includes a resin bond for flexibility and abrasive adhesion. Designed to be attached to a random orbital sander using disc cement, this non-stick disc is ideal for lacquer and clear-coat sanding projects. Use this disc to get reliable finishes on aluminum, fiberglass, composites, titanium and super alloys.