1. QUICK, VERSATILE: Pumice stone for cleaning calcium sediment, limescale, and hard water rings on toilets, sinks, bathroom tiles, and other ceramic surfaces. It can also be used to remove rust and oil stains from grills and ovens. 2. MATERIAL, PRINCIPLE: Pumice stone toilet bowl cleaner is made with pumice. Stubborn stains can be quickly removed by rubbing, while not creating any scratches. 3. CONVENIENT: Our pumice stone has a handle, no gloves required, and can be easily used to clean stubborn stains from toilets. Designed to last longer and clean better. 4. TOUGH: More than 30% more dense than similar products, designed to last longer and clean better. 5. HIGH QUALITY: A set of 2 pumice stones provides a better value while being suitable for cleaning various areas of your home. One can be used specifically for your toilet, and the other for your kitchen sink, bathroom sink, or other surfaces.