3M ELECTRICAL SPEC. part FP-301-3/16-BLACK-250' is a high-quality heat shrink tubing designed for electrical applications. This thin spool contains 250 feet of black, polyolefin tubing that provides excellent insulation and protection for wires and cables. With its heat-activated adhesive lining, it tightly conforms to the shape of the underlying material, creating a secure and waterproof seal. This versatile tubing is ideal for a wide range of industries and can handle various environmental conditions. Whether you need to repair or protect electrical connections, this 3M heat shrink tubing is a reliable choice.