Stop using harmful and dangerous chemicals. Use Ring X Natural Pumice Stone - Erase toilet Bowl rings in seconds with ease. Scratch Free Cleaning. Removes tough stains, Ring X is made from natural 100% pumice stone, making it tough enough to blast through the toughest stains. It can scrape away the dirtiest, thickest stains quicker than any product on the market. Yet it won’t leave a scratch on porcelain surfaces, Ring X give your toilet a spotless clean without using any harsh chemicals, so it’s safe and convenient. And it’s not just for your toilet. Use it on your sink, tile, bathtub and so much more.