Measuring three quarters of an inch by 22 yards, and with a thickness of 7 mil, this roll of black General Purpose Electrical Tape from Atlas Adhesive Tape is an essential tool when working with electrical cables. Made with a PVC backing and an efficient rubber-based adhesive, this tape allows you to easily insulate wires for tasks such as splicing and bundling. It is rated for use with voltages up to 600V, and meets UL requirements.