Professional grade tape that's ideal for electrical projects requiring color coding.3M's Scotch Vinyl Electrical Tapes are highly flexible, stretchy and conformable to virtually any shape requiring color-coded insulation. With its superior adhesion, plus abrasion and weather resistance properties, you'll want to make sure you have plenty on hand for all your boating and home electrical needs.Typical Color CodesBlack: Insulation or low voltage, phase A wiringRed: Low voltage, phase B wiringWhite: Low voltage, neutral wiringBlue: Low voltage, phase C wiringGreen: Earth groundSpecifications7-mil vinyl materialTemperature rating 32F (0C) to 221F (105C)Resistance to flame, abrasion, moisture, solvents, oils and many acidsResists fadingUL listedMade in USA3/4"W x 66'L