Pferd 61084 Flap Disc 4-1/2x4/8-11 80 Grit (Package of 10) Pferd Sale! from 13620 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Flap Disc, 4-1/2" x 4/8-11" Threaded Arbor Hole, Polifan, Co-Freeze SG Inox, Ceramic oxide, 80 Grit SKU:PFE 61084