Designed for industrial, automotive, aircraft, and other heavy applications, this A975 sanding disc provides a uniform finish on primed and painted materials, composites, marine gel coat, wood and metals. This six-inch, self-adhesive, abrasive disc has a grit range of 80 and is made of seeded gel ceramic blended with heat-treated, P-graded aluminum oxide bonded on a strong, reinforced backing. Sold as a roll of 100 discs.