Premium Brush Head: The double-sided brush head is made of premium anti-scratch sponge and is firmly fixed by 2 plastic nails, which increases stability for long-term use. Head size bigger : The brush measures 3.5 x 3.1 inches, which is larger than other similar brushes, effectively removing stains and keeping a clean tank environment. Strong Handle: The 9.7 inch handle made of non-slip plastic is extremely sturdy and durable, allowing you to hold and use it without worrying about it breaking or cracking easily. Easy storage: The brush with a 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 use and not take up much space. Wide Application: This brush is a great helper tool, which is suitable for glass tanks or aquariums, but not for acrylic tanks, plastic tanks or other fragile water containers.