Open mesh waterproof silicon carbide for sanding and finishing of drywall joint compound. Non-clogging abrasive screen has grit on both sides for longer life. Can be used on wood, metal, plastic, and auto body filler. 4-3/8" x 11" sheets. 25 sheets per box. No. 4255: Grit: 220 Grit, Length: 11", Width: 4-3/8", Pkg Qty: 25, Package Type: Box No. 4256: Grit: 180 Grit, Length: 11", Width: 4-3/8", Pkg Qty: 25, Package Type: Box No. 4257: Grit: 150 Grit, Length: 11", Width: 4-3/8", Pkg Qty: 25, Package Type: Box No. 4259: Grit: 100 Grit, Length: 11", Width: 4-3/8", Pkg Qty: 25, Package Type: Box No. 4260: Grit: 80 Grit, Length: 11", Width: 4-3/8", Pkg Qty: 25, Package Type: Box