The QUALTEK ELECTRONICS Q5-2X-3/4-01-QB48IN-5 is a high-quality heat shrink tubing that is designed to protect and insulate electrical connections. This tubing features a 2 wall construction with adhesive lining, ensuring a strong and secure hold. Made from durable polyolefin material, it offers excellent protection against abrasion, chemicals, and moisture. The tubing has a 2:1 shrink ratio, meaning it will shrink to half of its original size when heated. The color of the tubing is black, offering a sleek and professional appearance. The inner diameter of the tubing is 3/4 and it has a length of 48. Each package contains 5 tubes, providing ample supply for your project.