Goldblatt 15-Pack 9" 150 Grit Radial Sanding Disks are replacement sanding disks for Goldblatt 9" Radial Sander and all other 9" hook-and-loop sanders. These sanding disks are made of aluminum oxide sandpaper, which is used for general purpose sanding on paint, wood, and metal. They have a protective rubber bumper that will not mark or damage the surface, allowing you to sand around door jambs, window casings, and right up to the ceiling with ease. These sanding disks work with any 9" hook and loop sanding disk and include an adapter to fit any pole. They are replacement sanding sheets for the Vortex sander and come in a pack of 15.