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Product name: Ferrite Cores Ring Clip-On RFI EMI Noise Suppression Filter Cable Clip
Color:Grey
Size :
0.14 inch/ 3.5 mm (inner diameter): about 0.98 x 0.51 inch/ 25 mm x 13 mm (outer size)
0.20 inch/ 5 mm: about 0.98 x 0.51 inch/ 25 mm x 13 mm
0.28 inch/ 7 mm: about 1.18 x 0.63 inch/ 30 mm x 16 mm
0.35 inch/ 9 mm: about 1.38 x 0.75 inch/ 35 mm x 19 mm
0.51 inch/ 13 mm: about 1.42 x 0.94 inch/ 36 mm x 24 mm
Specification:
3.5MM inner diameter: suitable for 3.5-4.5mm cables;
5MM inner diameter: suitable for 5.0-6.5mm cables;
7MM inner diameter: suitable for 7.0-8.5mm cables;
9MM inner diameter: suitable for 9mm cables;
13MM inner diameter: suitable for 10.5-12.5mm cables;
Packing included:
15 Pcs-13mm inner diameter
GvL
2025-08-31 13:12:53
These are intended to reduce electromagnetic interference (EMI) and improve signal integrity in cables. The 13mm clip will fit cables with a diameter of 9mm to 13mm.These are easy to attach and remove and re-install. I have moved them on the same cable several times and there isn't any sign of fatigue or stress on the housing. The clip is made of plastic and the ferrite core seems to be the expected density.
Michael B
2025-08-26 17:26:08
Like their smaller counterparts, these worked mechanically as expected. They snap on and off (with the help of a small flat head screw driver) fairly easily. I did my best do do some RF testing using a Nano VNA but I don't think my set up was sophisticated enough. The best I could tell is that these reduced frequency interference from 10MHz to 250MHz reasonably but not so much after that.For general use - it appears that you might need 2-3 of these ferrites to get the impact you are looking for. That's not unusual - Fair Rites are similar.Bottom line - these will likely work for general use - but if you are really trying to reduce EMI you should consider putting several on your lines - not just one.What would make this a better value, is for the manufacturer to give some specs on the ferrite material being used.
GvL
2025-08-23 13:31:17
These are intended to reduce electromagnetic interference (EMI) and improve signal integrity in cables. The 13mm clip will fit cables with a diameter of 9mm to 13mm.These are easy to attach and remove and re-install. I have moved them on the same cable several times and there isn't any sign of fatigue or stress on the housing. The clip is made of plastic and the ferrite core seems to be the expected density.
Michael B
2025-08-22 10:12:19
Like their smaller counterparts, these worked mechanically as expected. They snap on and off (with the help of a small flat head screw driver) fairly easily. I did my best do do some RF testing using a Nano VNA but I don't think my set up was sophisticated enough. The best I could tell is that these reduced frequency interference from 10MHz to 250MHz reasonably but not so much after that.For general use - it appears that you might need 2-3 of these ferrites to get the impact you are looking for. That's not unusual - Fair Rites are similar.Bottom line - these will likely work for general use - but if you are really trying to reduce EMI you should consider putting several on your lines - not just one.What would make this a better value, is for the manufacturer to give some specs on the ferrite material being used.
RF
2025-08-03 10:20:00
Ferrites aren't one size fits all, electrically. There are different mixes/types of ferrite, which are all good for different things. These don't say anything about it. Ah well. They mechanically work, but using them in a mobile capacity I've not been able to test whether they work since I'm hurtling down the road.
B. A. Egan
2025-07-21 18:14:13
It’s a ferrite bead. The dimensions are accurate. Not much else to say, I suppose.I get occasional click noises on an audio device that I’ve been trying to eliminate. I was hoping it was a burst of RF interference and that this would help with my issue, but the click persists. I don’t fault the ferrite bead, I think now that there is some other issue with the AC power.
RF
2025-07-05 18:17:37
Ferrite cores are attached to audio interconnect cables, speaker cables, and power cables to prevent them from becoming antennae, picking up noise from surrounding electrical appliances, radio stations, your neighbor's electric lawn mower, etc., and adding noise and hash to your audio signal.I use the 13 mm size to attach to thick interconnects, thick speaker cables, and thicker than standard-sized power cables. They make a difference in the audio by keeping cable noise out of the audio. This results in a lower noise floor and what audiophiles call a "blacker background." Because there is less electrical hash and extraneous noise, an additional result is that the music seems more relaxed. as if your brain has to do less processing to separate the music from the noise.These are well-constructed, easy to install (at the source end of the cable, not the receiving end), and keep your cables free of noise. Ferrites are a well-known audio tweak and can work magic if your cables are susceptible to noise outside of your audio chain.
Steven Hull
2025-06-22 11:52:44
I'm an Amateur Radio Operator. Once you start using these radios, you work to reduce EMI and RF interference around your home, RV, Boat, or Car. Things like lighting, TVs, and other appliances can add static to what you hear. Ferrites like this, help eliminate this notice and make incoming signals clearer and more enjoyable.I am guessing that these are for UHF/VHF but it does not state the type (I.E. 31, 43, 61 or 77) I will be using these on AC and DC power cords, sound, coax, and ethernet cords to quiet the notice around my house.
HockeyNJ
2025-06-19 15:42:10
These are nice clip on RF ferrite filters for putting on ends of cables to reduce or eliminate RF noise/interference. Sometimes they're all you need to get some RF noise out of an audio, electrical, or data line. This pack of 15 allows you to use them when you need them. The ferrite is in 2 halves in the plastic shell that snaps shut easily - and with a little tug on the locking part, you can easily open it to remove from the cable. 5 stars because they're exactly as advertised and great little filters to have on hand when you have a noisy cable from RF interference. Sometimes you only need one at one end of the line, sometimes they work better at both ends. On long runs, you can put another one in the middle.
Dave
2025-06-05 21:10:01
I got these ferrite beads to help kill the noise I get on my computer speakers, when my radio is transmitting on some bands. I found the effectiveness varies with what frequency I'm transmitting on. I'm not sure what type of ferrite this is, but it might be the type that is more effective at higher frequencies (forget what that type is. 72 or something?) The general rule of applying ferrite beads, are to put them at each end of the problem cable, and in the middle if it's extra long. Keep adding beads until it kills the noise. Try to size the beads to fit your cable snugly, but you can run multiple loops through the ferrite beads, if they're big enough. Used properly, these clip-on ferrite beads can be very effective for eliminating some types of RFI.
Customer Review
2025-05-15 09:03:22
These are really simple devices so they get a simple review. Essentially you open them and clip them around cables to clean up analogue signals. As the title says these are required less frequently with mostly digital signals, but they still have uses for audio equipment which can still be prone to interference.I have some surround sound speaker in my garage workshop that is prone to interference which already had one of these attached. I removed it and sure enough there's a little hum in the background again, so I attached one of these filters and the hum once again has gone, so I'd say they work from my very limited testing.They feel as well made as others I've used over the years.
The13thMan
2025-05-14 21:02:44
These ring cores come plainly bagged, with 15 included. Each is identical, with two clips on the side that are easy to flip open, build quality seems OK. I have a spaghetti junction of cables so like to use ferrite cores where I suspect there may be interference, these are just the right size for my larger cables so I am very happy with them
RF
2025-04-22 11:03:21
Ferrites aren't one size fits all, electrically. There are different mixes/types of ferrite, which are all good for different things. These don't say anything about it. Ah well. They mechanically work, but using them in a mobile capacity I've not been able to test whether they work since I'm hurtling down the road.
B. A. Egan
2025-04-20 10:19:00
It’s a ferrite bead. The dimensions are accurate. Not much else to say, I suppose.I get occasional click noises on an audio device that I’ve been trying to eliminate. I was hoping it was a burst of RF interference and that this would help with my issue, but the click persists. I don’t fault the ferrite bead, I think now that there is some other issue with the AC power.
RF
2025-04-10 14:33:45
Ferrite cores are attached to audio interconnect cables, speaker cables, and power cables to prevent them from becoming antennae, picking up noise from surrounding electrical appliances, radio stations, your neighbor's electric lawn mower, etc., and adding noise and hash to your audio signal.I use the 13 mm size to attach to thick interconnects, thick speaker cables, and thicker than standard-sized power cables. They make a difference in the audio by keeping cable noise out of the audio. This results in a lower noise floor and what audiophiles call a "blacker background." Because there is less electrical hash and extraneous noise, an additional result is that the music seems more relaxed. as if your brain has to do less processing to separate the music from the noise.These are well-constructed, easy to install (at the source end of the cable, not the receiving end), and keep your cables free of noise. Ferrites are a well-known audio tweak and can work magic if your cables are susceptible to noise outside of your audio chain.
Steven Hull
2025-04-05 13:05:24
I'm an Amateur Radio Operator. Once you start using these radios, you work to reduce EMI and RF interference around your home, RV, Boat, or Car. Things like lighting, TVs, and other appliances can add static to what you hear. Ferrites like this, help eliminate this notice and make incoming signals clearer and more enjoyable.I am guessing that these are for UHF/VHF but it does not state the type (I.E. 31, 43, 61 or 77) I will be using these on AC and DC power cords, sound, coax, and ethernet cords to quiet the notice around my house.
HockeyNJ
2025-04-01 15:19:00
These are nice clip on RF ferrite filters for putting on ends of cables to reduce or eliminate RF noise/interference. Sometimes they're all you need to get some RF noise out of an audio, electrical, or data line. This pack of 15 allows you to use them when you need them. The ferrite is in 2 halves in the plastic shell that snaps shut easily - and with a little tug on the locking part, you can easily open it to remove from the cable. 5 stars because they're exactly as advertised and great little filters to have on hand when you have a noisy cable from RF interference. Sometimes you only need one at one end of the line, sometimes they work better at both ends. On long runs, you can put another one in the middle.
Dave
2025-03-25 16:54:55
I got these ferrite beads to help kill the noise I get on my computer speakers, when my radio is transmitting on some bands. I found the effectiveness varies with what frequency I'm transmitting on. I'm not sure what type of ferrite this is, but it might be the type that is more effective at higher frequencies (forget what that type is. 72 or something?) The general rule of applying ferrite beads, are to put them at each end of the problem cable, and in the middle if it's extra long. Keep adding beads until it kills the noise. Try to size the beads to fit your cable snugly, but you can run multiple loops through the ferrite beads, if they're big enough. Used properly, these clip-on ferrite beads can be very effective for eliminating some types of RFI.
Customer Review
2025-01-23 13:54:03
These are really simple devices so they get a simple review. Essentially you open them and clip them around cables to clean up analogue signals. As the title says these are required less frequently with mostly digital signals, but they still have uses for audio equipment which can still be prone to interference.I have some surround sound speaker in my garage workshop that is prone to interference which already had one of these attached. I removed it and sure enough there's a little hum in the background again, so I attached one of these filters and the hum once again has gone, so I'd say they work from my very limited testing.They feel as well made as others I've used over the years.
The13thMan
2025-01-18 12:08:57
These ring cores come plainly bagged, with 15 included. Each is identical, with two clips on the side that are easy to flip open, build quality seems OK. I have a spaghetti junction of cables so like to use ferrite cores where I suspect there may be interference, these are just the right size for my larger cables so I am very happy with them
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