Double-sided magnetic cleaning: The magnetic glass cleaning machine, with powerful internal magnetism, locks the two sides of the cleaning together, giving you a complete cleaning anywhere. Double-sided magnetic window cleaner, easy to clean and use. When you move one side, the other side follows. (Please choose the appropriate version according to the thickness of the glass, otherwise it may not work properly.) Easy to Use: First tie the safety cord to the part of the cleaner that will be outside the window, turn one of the parts to open it, dip it in water to moisten the sponge, add glass cleaner or soap to the sponge, close the two sides and it will be ready to use, comfortable and simple, achieving perfect cleaning. High-Quality Materials: This magnetic glass cleaning wiper is made of high-quality ABS, natural latex and neodymium iron boron magnet, strong magnetic, non-toxic and harmless, corrosion-resistant. Built-in water storage sponge, no need to add water repeatedly. The magnetic and cleaning cotton is durable and can clean the glass more effectively. Labor-saving triangular design: Designed with a triangular shape design (with smaller frictional resistance), flexible rotation, making your hands acid-free and labor-saving. This glass cleaner can wipe the narrow area of the window and clean without dead corners, providing you with a more thorough cleaning. Note: Due to the strong magnetic force of the aquarium cleaner, when opening, please rotate the two surfaces of the brush to a 90-degree angle and then separate them. After disconnecting, do not bring them close to avoid pinching your fingers. Instructions according to the thickness of the glass: 3-8 mm: For single-wall glass (aquariums, windows, etc.) from 3 to 8 mm. 8-15 mm: For reinforced single-wall glass from 8 to 15 mm. 15-26 mm: For double-wall glass from 15 to 26 mm. 20-30 mm: For reinforced double-walled glass from 20 to 30 mm. Buying advice: Choose the model adapted to the thickness of your glass to avoid falls or difficult handling due to the magnetic force.