Konohan 20 Pieces Ferrite Bead Clip on Ferrite Core Ferrite Noise Supressor Ferrite Rings RFI EMI Noise Filter Cable Clip for USB Video Data Cable, 0.11/0.19/0.27/0.35/0.51 Inch Inner Diameter, Black

Works as expected.

My home stereo speakers were picking up someones ham radio signal, which would play overtop of my music and throughout the day. Reddit pointed me to ferrite beads, and these worked perfectly! I just snapped a few on to some wires, and I haven't heard any "ham" since. Excellent product and value.

Purchased these as I had installed LED headlights on my 2011 Jeep Wrangler JK, and noticed that when the headlights were on, every station on my radio ( FM ) was either totally static or static so bad waving in and out, that it wasn’t worth listening to it. Installing these was a common recommendation. Not sure exactly what size was needed or would work, I decided on the multi size kit. One of the sizes that there was 4 of in the kit looked like the best size…. So clipped two units on the each of the group of wires leading from the headlights. Started the vehicle up, turned on the headlights, and cranked the radio. Every station was coming in clearly again !! Would highly recommend

i never leave reviews but these worked beautifully for me. i just purchased an sm57 and audient evo 4 and i was getting horrible static on recordings, when my gain was at about 70%. i slapped these on and the static is NOTICEABLY lower, i can turn the gain up to 75 and i would have to focus to try and hear the static

This package does not come with 5 different inner diameters as stated, but only (supposedly) comes with the 4 different inner diameters. But even then, I only received 18 instead of 20 ferrite beads. Here is what I received (from the smallest size to largest size): Seven ferrite beads of 5 mm diameter (none were of 3 mm diameter), Four ferrite beads of 7 mm diameter, Three ferrite beads of 9 mm diameter (I should have received four of these), and Four ferrite beads of 13 mm diameter. It happened to be fine for me that there were no 3 mm diameter ferrite beads as it turns out those would be too small even for my smallest cables. I even only needed six of the 5 mm diameter beads, so it doesn't impact me that I only received seven instead of eight. However, I did need all four of the 9 mm diameter beads and only received three. This package was still useful to me to help me figure out what size ferrite beads I need, but I will be finding a different place to order ferrite beads from in the future.