Usage Tips:Features: This Filter effectively suppresses both continuous and intermittent impulses disturbances, ensuring stable performances for your electrical devices with voltages of 250V. Craft from stainless steel, this single phase electromagnetic interferences filter operates efficiently across wide temperature ranges, providing protective for sensitive electronics. For engineers and technicians, this Filter is for those who require interferences suppression in industrial or home electrical. Use this power filter in environment where maintaining signal integrity such as data centers, manufacturing facilities, or residential setups with high performances electronic equipment. With its current ratings adapt to various applications, making it addition for enhancing long time use and reliability of your power sources. Specifications: Component: Stainless Steel Type: As Picture Show, Three Type to Choose Size: 4.4x4.4cm/1.73x1.73inch Package Includes: 1pc Power Filter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.