Arc Abrasives 71-10845AF Predator Type 29 Flap Discs, 60-Grit, 5-Inch by 7/8-Inch,10-Pack 5 Inch in diameter with a 7/8-inch arbor hole Durable fiberglass backing Hard edge angled face (Type 29) for more aggressive grinding and faster material removal Max RPMs: 12,150 Pack of 10 flap discs