The Qualtek Electronics Q5-4X-1-01-QB48IN-5 is a high-quality heat shrink tubing ideal for providing reliable insulation and protection for various electrical components. With a 4:1 shrink ratio, this tubing is designed to securely fit over items with an inner diameter of 1 inch and shrink down to a snug fit when heated. This tubing is made from durable polyolefin material and features a 2-wall construction, providing enhanced strength and resistance to heat, chemicals, and abrasion. Additionally, the tubing comes with adhesive lining, ensuring a reliable seal and added protection against moisture and dirt. Each package contains five 48-inch long tubes, providing ample material for various projects. The tubing comes in a sleek black color, offering a professional and clean finish. Whether you're working on electrical repairs, automotive applications, or DIY projects, the Qualtek Electronics Q5-4X-1-01-QB48IN-5 heat shrink tubing is a reliable solution for all your insulation needs.