HaSteeL Grill Pumice Brick Stone 4pcs is made of natural and ecological material. No toxic or any irritating chemical smell. 3.9x2.7x1.5in(10x7x4cm) size is perfect for palm and fingers to work. Reduce wrist fatigue very well. High-density foaming structure brings strong friction between grill brick and item to increase cleaning power. Won’t scratch cooking grate or leave brush fur to your food, the powder is easy to clean by the wet towel or blow away after using. Effectively removes various stubborn stains such like hard water films, Calcium precipitate, Grease, Rust, Food residue. Perfect for flat top, grill grate, griddle, cast iron, pan’s bottom, sink, bathtub, toilet, pool. Contains 4 independent packing cleaning stones, easy to store. Great grill cleaning stone kit that you can’t miss! Package contains: 4 x Rectangular grill bricks, 3.9x2.7x1.5in(10x7x4cm) Why HaSteel Pumice stone? 4 independent packing design: Easy to store, ensure its clean and condition when you receive it. High-density foaming structure: Increase friction between grill stone and area to be cleaned, brings strong cleaning power. Safe & Commercial material: Made of high-quality ecological material, safe to use without any toxic, won’t leave metal brush fur to your food. The powder is easy to blow off or wipe off by the wet towel. Warm tips: 1. Please don’t clean polished products for preventing damage. 2. Soak or wet out the items and pumice stone before cleaning can get better effect. 3. We recommend storing in dry place after airing to prong-long item’s use life.