Super-Strong Diamond Pad Mini Hard Polishing For Water-Related Ceramics & Tiles, Set of 3 Made in Japan ☆ This is a professional-grade, high-quality polishing tool that uses the hardest abrasive material, "artificial diamond," to remove stubborn, ingrained stains. ☆ Simply rub with water to easily remove dirt that couldn't be removed with abrasives or solvents. ☆ A compact size for home use, adapted from high-end commercial products. Uses: Stains on ceramics and tiles, yellowing, toilet bowl scale, stubborn stains that have become ingrained or discolored, etc. Although this is a new, unused item, please understand that it has been stored at home. ◆ Please refrain from purchasing if you are nervous about the condition or are looking for a perfect product. We apologize.