Hook & Loop Backing Pads are lightweight and perfectly balanced for faster working and a professional finish 6" Diameter Disc that screws onto the bottom of super bee floor sander Quick and easy disc changes with micro hook and loop attachment system Compatible with U-Sand Super Bee Floor Sander Replaces OEM BP6 Backing Pad Superior Pads and Abrasives Aftermarket RSP70 6 Inch Dia Hook & Loop Sanding/Backer Pad with 7/16 Inch -14 Mount Shaft - Replaces OEM# BP6