This is a type of stainless steel (of unknown specification) solid wire which is called “dental wire” or “orthodontic wire”.
I think it is easier to form and bend than spring wire (music wire, piano wire), you can shape and bend it with your hands (or pliers) but it is still fairly stiff in direct linear compression and of course in tension, less elastic (springy) than spring wire.
I think that the thin stuff, 0.5mm say, is often used by fishermen for tying fishing flies, and maybe thicker stuff for making “wobblers” and other lures.
Maybe it’s used for jewellery, like perhaps earring hooks or something, but I can’t say about any health and safety stuff in that regard, it comes from China, it’s wire, draw your own conclusions.
Anyway my thinking is for servo linkages of various types, especially if in tension (pulling), perhaps in compression too (pushing) – maybe for the thinner diameters in a bowden tube setup.
Note that I don’t do any aviation type RC myself, I don’t deal with heavy loadings etc, so, you know, take my reckons with a pinch of salt, test before you commit to the air, maybe it will be no good for your specific application.
For the MG996R servos you would want the 1.4mm diameter wire it fits the standard horn holes for that servo perfectly
For the smaller 9g servos (MG90S, SG90), 3.7g servos (GH-S37A), and 1.5g linear servos, you would want the 0.9mm diameter wire, again it fits the horn holes for those servos perfectly.
Each roll is supposed to be approx 50g weight, but it’s a bit variable. I do not know many meters that equates to for each roll, look at the pictures, there’s a fair amount.
I have no specifications of the wire, and obviously, do I have to say, yes I do, don’t actually use for dental purposes!
This wire is not suitable for soldering to, for that you would want solid tinned copper bus wire.
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