Hard water removal from glass has never been easier. The Knuckler Gold Cleaning Pad fits the Knuckler scrubbing tool - giving it a dimension of workability that cleans polishes and restores. Guaranteed soft tough safe and non-scratch on glass. Its the only pad specifically designed for hard water removal from auto/marine/RV windshields shower doors glass table tops windows and more. BENEFITS: Fits the Mr. Hard Water Knuckler hand scrubbing tool! Reusable Indoor and Outdoor Optimized for hard water removal Uses: Windshields windows mirrors shower doors glass table tops pool & tile porcelain ceramic stove tops glass table tops and more. Other Uses: Marine cleaning boat cleaning woodworking wood finishing paint stripping teak mahogany hardwood finishing. Woolit Super Soft #0000 Steel Wool Textile Product Details The Knuckler Gold Cleaning Pad is composed of an advanced superfine textile woven into a soft backing material. The pad is soft enough not to scratch but tough enough to remove hard water stains and dirt. Recommended Usage: Best when used with Mr. Hard Water Powder -an unbeatable combination for hard water removal. The Knuckler Gold Cleaning Pad is recommended for cleaning windshields before applying Envicoat protective coating.