9mm Detachable magnetic anti-interference EMI Noise filter ring

From the shop's description

This 9mm Detachable magnetic anti-interference EMI Noise filter ring can be used wit wire of diameter 9mm and less. Specifications: Material : Nickel zinc ferrite Wire Diameter : 9mm Item color : black. Widely used in color TV, mobile phones, monitors, electric car chargers, alarm, DVD, switch power supply, the UP power supply, DC – DC converters, high frequency transformer, filter, inductor, household appliances, industrial automation, instrumentation, communications, medical equipment, energy-saving lamps and lanterns,etc. Features: Used to reduce electromagnetic interference from the outside world, greatly improve the quality. Can be used in power line, audio line, AV line, data line, USB wire,earphone line and other wires. High temperature resistance, corrosion resistance, detachable design, corresponding magnetic ring buckle can be adapted according to the diameter of the line, very convenient, and could be used repeatedly.