These noise filter can improve the electromagnetic field around the solenoid, thus avoiding outside interference.Just clip it on and you will get clearer signal and faster data transmission.
Note:
Please install them in place near the interference source.(Near the import and export of shielding case as much as possible.)If a cable has equipment that needs to be protected on both sides, install one at each end. Depending upon circumstances, identifying and troubleshooting both of affected and offending devices are necessary for successful installation.

Material:
Ni-Zn ferrite Plastic
Inner diameter:
3.5mm/5mm/7mm/9mm/13mm Specifications:
3.5mm / 0.14in (inner diameter): suitable for 0.06-0.14in / 1.5-3.5mm cables
Application: Car DVR, headset cable, speaker cable, mouse cable, keyboard cable, USB cable, etc.
5mm / 0.2in (inner diameter): suitable for 0.14-0.2in / 3.5-5mm cables
Application: car DVR, speaker cable, mouse cable, keyboard cable, USB cable, RS232 serial port camera cable, etc.
7mm / 0.27in (inner diameter): suitable for 0.2-0.27in / 5-7mm cables
Application: AV cable, coaxial audio, audio power cord, IP serial camera, etc.
9mm / 0.35in (inner diameter): suitable for 0.27-0.35in / 7-9mm cables
Application: HDMI cable, VGA cable, DVI cable, power cord, speaker cable, industrial cable, etc.
13mm / 0.51in (inner diameter): suitable for 0.35-0.51in / 9-13mm cables
Application: HDMI cable, IP communication cable, DVI cable, super-speed VGA cable, etc.
Whether it contains magnetism: No
Package include
3.5MM Noise Filter Cable Ring x8pcs 5MM Noise Filter Cable Ring x 8pcs 7MM Noise Filter Cable Ring x 8pcs 9MM x 8pcs 13MM x 8pcs