Perfect for metal and woodworking, this aluminum oxide, open coat, non-loading 180 grit sheet is constructed on a A weight, light paper backing.Grade: P180 gritDimensions: 9" x 11"Backing: A weight paperColor: BrownAbrasive mineral: aluminum oxideApplication: dry sandingSanding surface: clear coat, fiberglass, filler, metal, paint, plastic, puttyOne sheet