Check the listing for details. 20 Pack 4.5" x 7/8" Zirconia Flap Disc Grinding Wheels T29 FREE SHIPPING. Condition: New. Listed at 34.99 USD. 20 PC - High Density Flap Disk FREE Shipping If you build, Grind, Cut, Chop, Weld, Rebuild… This is the Flap Disk for you. Our High density wheels are almost 3X beefier than the typical Flap Disks sold today. Take a look at our picture comparing our product to other stuff sold on the market We are the manufacturer of this product, we use this product ourselves and know what it goes into this product, and we don’t cut corners to sell the cheapest flap disk on eBay, but can assure you we sell on the BEST. Our disks are made out of zirconia alumina grain blend .100 & 120 Grit will be a thinner disc as the paper is much finer. Your order will include 20 Flap Disk; we have 40Grit, 60Grit, 80Grit, 100Grit, 120Grit. If you are a large manufacturer or a distributor and looking for large volume discounts, (100pc+) please email me for details ails.