This STRONG, two-sided Magnetic Glass Cleaning Brush has built-in magnets that lock the two cleaning sides together. When you move one side, the other follows it. The innovative Cleaning Brush can be used to clean windows, aquariums, skylights, patio doors, shower doors, mirrors and even tiles. NOTE: The Magnetic Glass Cleaning Brush will not work on double glazed windows. Eco-friendly, all you need to clean the surface you want is warm water and plain detergent. The Cleaning Brush has a Safety Cable on one side to prevent falling! The cleaning brush is easy to use and clean! OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.