Features: Made of stainless steel, high strength, good rust resistance. Suitable for aquarium filter products, convenient and effective prevention. Small animals like most freshwater shrimp, invertebrates, and small fish and fish species are at risk of being sucked into the large tanks of most standard suction filters. When cleaning is needed, simply use your hands or a soft brush such as a toothbrush to remove debris that has accumulated on the screen cover. Please note that the stainless steel filter guard is mounted on the filter inlet pipe, not on the filter. Specifications: Material: Stainless Steel Type: 12mm/ 16mm/ 25mm Size: Approx.3x10.5cm/ 1.18x4.13in Package Includes: 1x Aquarium Filter Guard note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.