Arc Abrasives 71-10887AF Predator Type 29 Flap Discs, 120-Grit, 6-Inch by 7/8-Inch,10-Pack 6 Inch in diameter with a 7/8-inch arbor hole Durable fiberglass backing Angled face (Type 29) for more aggressive grinding and faster material removal Max RPMs: 8,600 Pack of 10 flap discs