[WORRY-FREE WARRANTY& Buy with Confidence ] ?Packaging Includes?10PCS X 13.0mm inner diameter Noise Filter.( VSKEY noise filter offer 30 days hassle-free return money back and friendly customer service.If you're not completely satisfied, simply let us know and we will offer a prompt refund or replacement, no questions asked.). *The ferrite cores come in two split halves, and clamp on to the cable whether it has a connector, or is hard wired to equipment. Install the ferrite core at the equipment side of the cable. 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.). *Easy to install with double snap clips,can be dismountable,Just snap clip it on to a cable easily,Stop EMI and RFI effectively.and get clearer signal and audio sound quality. *These ferrite core noise Filter,13mm(0.51 inch)inner diameter: Suitable for cable diameter 0.35inch - 0.51inch (9mm-13mm) cables,superb at reducing EMI / RFI high frequency interference caused by home appliances and electronics.Effectively screen electromagnetic interference and filter out high-frequency noise pulses.the more effectively improve the signal quality of audio and video. *This RFI EMI Noise Filter 13mm(0.51 inch)inner diameter: Suitable for cable diameter 0.35inch - 0.51inch (9mm-13mm) cables, Application Occasion:Clip them on IP Line of Communication, DVI Cable, overstriking VGA Cable,telephone, Power Cord, Coaxial, Audio, HDMI Video etc cables!.