3M Electrical Spec. 70-1X30FT is a high-quality electrical tape in a vibrant blue-gray color. With a thickness of 34000V/mil and made from silicone, this tape provides excellent insulation and protection for electrical wires and connections. Each roll is 30 feet long, making it convenient for various electrical projects. Trust 3M Electrical Spec. for dependable performance and durability in every application.