TE Connectivity / Raychem Brand heat shrink tubing part NB17272001 is a versatile solution for protecting and insulating electrical components. With a 4:1 shrink ratio, this tubing provides a secure fit and reliable performance. The tubing has an expanded inner diameter of 1.5" and a recovered inner diameter of 0.375", making it perfect for applications where there is a need for a larger initial diameter that can recover to a smaller diameter. It is made from high-quality materials and is designed to withstand a wide range of temperatures, chemicals, and environmental conditions. The black color adds a sleek and professional finish to any project. This heat shrink tubing is ideal for use in automotive, aerospace, marine, and industrial applications where durability, flexibility, and performance are paramount.