Premium Brush Head: The double sided brush head is made of superior scratch-proof sponge and it is tightly fixed by 2 plastic nails, increasing stability for long-term use. Larger Head Size: The brush measures 3.5 x 3.1 inches which are larger than other similar brushes, removing the stains effectively and keeping a clean tank environment. Strong Handle: The 9.7 inches handle crafted with non-slip plastic is extremely sturdy and durable, allowing you to hold and use it without worrying about breaking or cracking easily. Easy Storage: The brush with the total length of 12.65 inches is designed with a hole at the end of the handle, allowing you to hang it on the wall after using and not taking up much space. Wide Application: This brush is a great assistant tool, which is suitable for glass tanks or aquariums, but not for acrylic, plastic tanks or other fragile water containers.