Safety rope, the anti-fall rope around the wrist, safe and secure, the rope will be tied to your hand to ensure that the magnetic will not drop off from the window, providing you a stable and safe cleaning experience.Window Cleaning Tool - This magnetic glass wiper is effective for glazed windows 3-10mm thickness. It can quickly clean the glass surface, Get twice the result with just half the effort. Please choose the appropriate version according to the thickness of the glass.Triangular Shape Design - Ergonomically comfortable handle,triangle-shaped design can reach to the narrow area and clean without dead corners.Magnetic & Practical - It's made with ABS material, Natural Latex, magnet of premium quality to provide strong magnetic force. durable and long-lasting. Built-in the water-store sponge, no need to add water repeatedly.Wide Usage - This Magnetic Glass Cleaner Wiper is effective for glazed windows 3-10mm thickness, perfect for home windows, car windows, greenhouse, .etc. Can be used for cleaning for windows, vehicle windows, sliding doors, shower screens, mirrors, any glass surfaces.How to choose the proper size?A: You can select the appropriate size according to the thickness of the glass to be wiped. The measurement method is as follows:Glass thickness measurement methodGlass thickness =W Width- X width - Y widthSpecification:Material: plastic + Magnetic + RubberApplicative Range:3-5mm 5-12mm 15-24mm 20-30mm glass Package Included: Please see the images for reference