Description: 304 stainless steel 1.6 core standard wire, powerful filtration and adsorption,improving the water quality. Cross wire bristles, strong adsorption, good tenacity, not easy to deformation, can be used repeatedly for a long time. Strengthened the physical filtration and biochemical filtration. Suitable for biochemical filter tank, filter box, filter vat, bottom or top filter tank. Lightweight and easy to use. Great for your fish tank daily cleaning use. Specification: Material: Plastic and Stainless Steel Size: approx. Width: 12cm or 4.72inch Length: 30cm or 11.8inch, 40cm or 15.7inch, 50cm or 19.7inch. Color: Black Package Includes: 5 Piecs of Aquarium Filter Brushes Note: The size of the actual item you received could be slightly different from the size above. Meanwhile, please be reminded that due to different color light, the display under the picture, will cause different color difference problem. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.