Jiahui 9mm Movable Ferrite + PVC Magnetic Ring for Cables - Black
Anti-magnetic; Suitable for VOD engineering home decoration and others; Size: 33 x 16mm; Hole diameter: 9mm; Core frequency: 1kHz~100MHz; Can eliminate noise wave output choke EMI / RFI filter wave and deburring; Suitable for various cables USB cables and AV cables etc.; Eliminates electromagnetic radiation