1. Double-sided Magnetic Window Cleaner: Triangular shaped magnetic glass wiper, with powerful internal magnet locking the two cleaning sides together, provide you a comprehensive window cleaning inside outside. When you move one side, the other one follows. Wipe glass inside, clean two sides of window, especially convenient for high rise windows cleaning. 2. Choose Right Windows Thickness: This magnetic glass cleaner wiper is only for 5-12mm thickness single glazed glass surface. Glass in different thickness should use different magnetic glass wipers, otherwise it can not move or attach on the glass surface. Please choose the appropriate version according to the thickness of glass. 3. : Magnetic window cleaner wiper is made of high quality ABS material and natural latex, magnet, providing strong magnetic force, with built-in water storage sponge to clean the glass. The magnet is not easy to demagnetize and the inside cleaning cotton is replaceable, durable window cleaning tool. 4. With Safe Rope: Window Cleaner comes with 2m long anti-falling rope, when you use this magnetic glass cleaner, the rope will be tied to your hand, never falling down, provide you a stable and cleaning experience.