Window Magnetic Cleaner Cleaning Brush Water Injection Adjustable Double Side Super Strong Magnet Double Glass 3mm-35mm

How to choose the correct size?

3-8mm suitable for single-layer glass

8-15mm is suitable for single-layer thicken glass

15-26mm suitable for double-layer glass

20-30mm is suitable for double-layer glass

25-35mm suitable for double-layer thicken/ordinary three-layer glass