Pumie, 6" x 3" x 3", Jumbo Scouring Brick, 100% Natural Pumice Stone, An Abrasive Aid For Cleaning Large Surface Areas Of Lime Scale, Paint & Carbonized Grease, Use On Porcelain, Ceramic Tile, Concrete, Masonry & Hard Metal Surfaces.Grooves itself to grill grids. Cleans faster, more efficiently than brushes and scrapers. Shapes easily to flat or curved surfaces. Removes carbonized food, grease and soot from porcelain or metal grill, BBQ and smoke cooker surfaces. Scours pancake and fry griddles without removing the "cure." Contains no hazardous chemicals. Safe for skin and use around food equipment. GRILLMASTER pumice stones have been used in the food service trades for generations to clean griddles without removing the cure and grills without leaving odors and unpleasant after taste.