ALLRO Flexible Sanding Sponges are designed for sanding a variety of materials and surfaces, from surface preparation to between coats sanding. A durable yet free cutting aluminum oxide abrasive is resin bonded to economical fabric reinforced foam. Coated on one side it provides extra flexibility to conform to all surface profiles from crown molding to door, floor and window casing, raised panels on doors, spindles, newel posts or any surface or profile that needs sanding or surface preparation. Available in a full range of grits 60, 100, 150 and 220 packed in convenient contractor quantities of 108 sponges per case. 3" x 4" x 1/2" Sheets.