3M 35 Color Coding Electrical Tape is a premium quality, 7-mil electrical insulating tape. Each roll is 1/2 inch wide x 20 feet long. Flame-retardant, weather-resistant; resists UV rays, abrasion, moisture, alkalies, solvents, many acids. One of each of 9 colors comes in a zip-lock pack. For indoor and weather-protected outdoor applications. Stretches to conform to virtually any shape that requires color-coded insulation. Outstanding electrical and mechanical properties make 3M 35 excellent for use in phase identification, color coding of motor leads and piping systems, and for marking safety areas.