The ALPHA WIRE part F7503/8-BK103, also known as FIT-750, is a durable and reliable heat shrink tubing. It is 3/8" in size, black in color, and comes in a convenient package of 25 pieces, each measuring 4 feet in length. This heat shrink tubing is designed to provide excellent insulation and protection for wires and cables, making it perfect for a wide range of electrical and electronic applications. Its high-quality construction ensures superior performance in various environments and offers resistance to chemicals, abrasion, and UV radiation. With its easy-to-use shrink ratio and flexibility, the FIT-750 tubing allows for effortless installation and a secure, professional finish. Trust ALPHA WIRE's F7503/8-BK103 to meet your heat shrink needs with its excellent durability, versatility, and convenience.