The ALPHA WIRE part F22111/2-BK105 is a high-quality electrical insulation solution. It features a FIT-221 heat-shrink tubing, measuring 1-1/2 in black color, and comes in a convenient package of 5 rolls, each with a length of 4 feet. This tubing is ideal for protecting and organizing wires, as it provides excellent electrical insulation and mechanical strength. Its shrink ratio of 2:1 allows for easy installation and a snug fit around the wires. With ALPHA WIRE's reputation for reliability and durability, you can trust this product to meet your electrical insulation needs.