Colour Name: Blue SizeS8*3.6*6cm Suitable for 4mm glass thickness Bestie of Aquarium : This device helps clean glass by magnetizing from an outside pad to the inner glass cleaner part, quickly and easily cleans away algae growth to make your aquarium stays healthy and looks its best. Scraper Attachment : Not only did a great job on the open areas, it comes with Stainless Steel/Plastic attachment which is easy to clean up tight corners. Comfortable and Non-slip : Non-slip grip with posh grain make it extremely easy to hold on to as you move it around. Floating and easy to storage : It floats so you never have to worry about it sinking to the bottom of the tank and you can retrieve it without getting your hands wet or disturbing any of your aquatic animals or plants. Simple and Durable : Its made of waterproof plastic that protects the magnets from rusting. Because of how the fabric is attached, you dont have to worry about it getting sand or substrate stuck in the fibers and scratching the glass while you clean. Its also extremely durable, so it will last a long time.