Remington Industries40SNSP.25 40 AWG Magnet Wire, Enameled Copper Wire, 4 oz, 0.0034" Diameter, 8304' Length, Natural

Unspooled quite a bit of this and never experienced a break.

Excellent quality. For someone who uses it for micro trace repair on circuit boards, there is no way you could even come close to using an entire roll in your lifetime.I use it to repair the finest of traces - sub-layer iphone traces that have been severed due to long screw damage. They work great, this wire is almost exactly the thickness of the traces I repair with it, though I wonder if the even thinner roll would have been easier to use. This wire is so thin, it's hard to say if the added difficulty of using an even thinner wire would outweigh the benefit of reduced thickness or not.All in all, it works great for what I need it for, and even though it felt a bit pricey, it has already paid for itself many times over, and as long as I don't lose it, I wont ever need to buy more.

I used this wire for some dead-bug soldering to an eMMC chip and it works very well. To burn off some enamel, I put some solder on the tip of my iron and dip the wire into the molten solder for a second or two. Flame from a lighter will melt the wire in an instant. There is plenty of wire on this spool and it will last me probably forever. Thanks!!

Got exactly what I wanted.

Super thin wire !!! I was making electro magnetic coils but wow I’m still wonder struck at how thin it is !!

I used it to do some trace repairs. Did some on a couple of dead 360's and PS3. This wire does the trick.

Under my microscope this wire appears to be the same diameter as one of my hairs.

I do not know if 0.002" falls within the tolerance of the specification of 0.0034". If it is the case, the tolerance is too wide. There is no guarantee it is the wire wanted.