Description of Forney 71931 Flap Disc: 4-1/2-Inch, 60-Grit, Type 29 Blue Zirconia With 5/8-Inch-11 Threaded Arbor
4.5" Flap disc - type 29 - 60 grit - depressed center - 5/8 11" Arbor. Easy to use. The product is manufactured in China. Blue zirconia flap discs for right angle grinders. Cuts fast and outlast sanding discs 10 to 1 for long life. Multiple layers of zirconia cloth flaps constantly exposing new extra sharp grinding points. Great flexibility for difficult work. Ideal for rough or fine finishing