If you are a moderate to average user and are debating between thinner and thicker wire, I would go with the thinner one. It's very easy/convenient to strip 6ft of thinner wire, fold it in half, attach one end to a stationary object, insert the other end into the drill bit, and rotate the drill bit to make double gauge wire. I then have 3 feet of thicker wire that I roll into a nice bundle and keep in my soldering iron kit. It seems like really good stuff. I'm not an electrician, but I know how important it is to have quality tools (especially if you lack the talent/technique/knowledge to fix quality defects). It's definitely easier to use than the typical thick stuff you find in a new soldering iron pack or those little tubes. My local electronics store agreed this is a quality product, I trust their knowledge far more than my own.
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