Review on Jabinco 20pcs Clip-on Ferrite Ring Core Noise Suppressor Cable Clip Set for Various Diameter Cables - Black by Nathan Issa

Good range of sizes at great prices. No mention of ferrite connections. So if you have a specific problem and you know what you need, you'd better study something instead. If you want to just stick them on anything to reduce VHF noise a bit, this is probably a great set. I'd guess it's a Mix 43 as there's no evidence other than that it's common on these cheap specimens. Wrap the wire or cable twice (or as many times as you like) for best performance, regardless of composition. The clamps aren't very tight and can sometimes open up if the cable or case is too tight, but they're reasonably secure.