I mean almost everything. Copper wire, dark brown, 18 gauge and the length seems to be there. I used it as part of a wire harness for my car, I needed a wide range of colors so I could tell what was at the other end of the bundle. Most auto parts stores sell the same wire for around $7, but they usually only have two or three colors. If given a choice I would only buy 10 feet of each color. The insulation on this cable is a little softer than auto manufacturers, but it does the job.