Includes (2) 881789SV Backing PadsNew, Bulk PackedGenuine OEM Replacement Part # 881789SV-2PKConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Porter Cable: 7800 Sander, 7800 Sander, 7801 Sander, 259385 Sander, 259485 110V Sander, 7800 Sander