Arc Abrasives 71-10887FF Predator Type 27 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 Flat face (Type 27) Max RPMs: 8,600 Pack of 10 flap discs