Webb Abrasives 616018 Xl Drywall Block Sanding Sponges Bulk, Medium/Fine Grit (10 Pack), 10" X 3" X 1" Dimensions: 10" x 3" x 1" 4-Sided med/fine (60/100) grit coating: brown aluminum oxide Can be used wet or dry; highly aggressive uniform surface removal Features clog resistant technology (crt); blue foam 10 sponges per box