This 18 gauge topcoat UL1015 wire kit contains a general purpose hookup wire that can be used in a variety of electrical applications The topcoat tinning means that the bare copper strands in this wire are twisted together and given an overall coating of tin, which provides good electrical connectivity and easy soldering Additionally, the PVC jacket protects the wire against abrasion, chemicals, oils, and solvents The wire conforms to UL specifications and provides excellent uniformity for easy processing, stripping, and terminating This kit includes black, blue, green, red, white, and yellow spools of wire 100 feet each