Magnet wire is super useful stuff, and when you need it there's nothing else that will work. Whether you're winding a transformer or choke, fashioning your own motors or just playing with electromagnetism in general, nothing beats this thin-gauge enameled wire. This kit comes with three common gauges of wire: 22, 26 and 30AWG. Everyone has his or her own method for removing the enamel insulation and make a connection to this stuff, but a little abrasion with some sandpaper or scraping with a hobby knife works well. If you have an open flame handy, you can burn the enamel off as well, just be careful!