TE Connectivity / Raychem brand Heat Shrink Tubing ST Polyolefin Black Spool is a reliable and versatile solution for protecting and insulating electrical connections. Made from high-quality polyolefin material, this heat shrink tubing is designed to shrink to half its original diameter when exposed to heat, creating a tight, secure seal around wires and cables. The black color provides a sleek and professional finish, while the convenient spool packaging allows for easy dispensing and storage. Ideal for a wide range of applications, this heat shrink tubing is a must-have for any electrical project.