[Pack of 10 Ferrite Beads Clip - on Design for HDMI Cable USB Cable Noise EMI RFI Suppressor Ferrite Core Ferrite Ring (9MM)

I have this Zoom MultiStomp MS70-CDR that i got used that has this high pitch squeal that I can never fix, and I have nice isolated power supply units. Came across a comment on reddit that suggested these, and since they're cheap on Amazon, I gave it a try, and I'm telling you, IT WORKS!So I tried it on another pedal, IT WORKED AS WELL!So yeah, buy more of these to save you some grief! I ordered more since I hoard pedals. 😅🤣🤘🏾

Giving 4 stars even though it was better than I hoped. The thing is, I have a 3.5mm cord. I bought the 7mm beads. Best example is the photo in description that says "Applications". Shows a bead and a 12v (cigarette lighter) cord. If you look at the opening of the bead in that photo you see little teeth and a V shape. Long story short, the 7mm bead fit my 3.5mm cord. I thought I would wrap the cord through it twice to hold it in place. As if two cords were running through it. Turned out that that wouldn't work. One pass and those little teeth bite down into the cord holding the bead in place. So... 7mm is a great fit for my 3.5mm cord. Not sure if 7mm would work well on a 7mm cord. The teeth might bite down too hard. If I were to need/buy another. I would up-size to double or near double the diameter of my cord. Now hopefully it cuts out what little interference I have in the audio on my dash cam. Also, seems to be made well. The little latch clips seem strong and appear to be of a grade that shouldn't break easily as applied.

I am an avid Ham Radio operator. There is always stray RFI in the radio room or in our operations vehicles. I used these Ferrite Beads on an especially RFI prone project. They worked wonderfully!! Caution: Be sure you are buying the right size for your specific project.

I selected 20 pcs 5 sizes and I received 10 pcs 1 size. The description shows both. The associated image and color "20 pcs with 5 sizes suggest that was what I was going to get."iSKUKA [Pack of 10] Ferrite Beads Clip - on Design for HDMI Cable USB Cable Noise EMI RFI Suppressor Ferrite Core Ferrite Ring (20pcs with 5 Sizes)I was able to make the 10 pcs one work for me.

Completely eliminated the radio noise in my truck caused by installing aftermarket led headlights. Great product very affordable and super easy to use no tools nessecary

The description states that this fits USB and HDMI cables. This did not fit either of the two. This ferrite core fits around cables such as iPhone charging cables and a small selection of skinnier/slimmer USB cables.

I bought these to filter RFI getting into USB cables. They worked for me

Have to be careful when ordering size. These were not as large as we needed, size showing in metric hard to compare to US measurements. Lucky we were able to use them elsewhere. Easy solution to radio frequency feedback in system