22x Ferrite Core Clip Ring Kit Noise Silencer Filters Cable Connector Terminal 3.5mm/5mm/7mm/9mmFeature:1. Zinc ferrite. It can improve the electromagnetic field around the electromagnet, thus avoiding external interference.2. Easy to install, easy to use, can be disassembled, and there is a flexible clip on the port.3. Good performance, high efficiency and long service life. Placing it near an electromagnetic source can improve the quality of the audio and video signal more effectively.4. The cable clip will not distort the transmission signal or affect the quality of audio, video, and photos.5. Application: used for all kinds of electronic jumper wires, wire harnesses, home appliances, air conditioners, computers, inverters, electric welding, power cords, etc. (Note: When the wire is too thin, you can wind a few more turns on the magnetic ring to create a relaxation effect.)Specification:Material: ferrite ni-znInner Diameter: 3.5mm/5mm/7mm/9mmIntroduction:(1)3.5mm/0.14in (Inner Diameter): suitable for 0.06-0.14in/1.5-3.5mm cablesApplication: Car DVR, Headphone Cable, Speaker Cable, Mouse Cable, Keyboard Cable, USB Cable, etc. (2) 5mm / 0.2in (inner diameter): suitable for 0.14-0.2in / 3.5-5mm cablesApplication: car DVR, speaker cable, mouse cable, keyboard cable, USB cable, RS232 serial port camera cable, etc. (3) 7mm / 0.27in (inner diameter): suitable for 0.2-0.27in / 5-7mm cables Application: AV cable, coaxial audio, sound power wire, IP serial camera, etc. (4) 9mm / 0.35in (inner diameter): suitable for 0.27-0.35in / 7-9mm cablesApplication: HDMI compatible cable, VGA cable, DVI cable, power cord, speaker cable, industrial wire, etc. Color: BlackUsage:(1) Signal line clamp to play the role of anti-interference and electromagnetic compatibility. (2) Tighten the power cord to stabilize the current and improve the sound quality. Note:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-3mm measuring deviation due to manual measurement. 4X3.5mm Ferrite Rings5X5mm Ferrite Rings8X7mm Ferrite Rings5X9mm Ferrite Rings