Hellermanntyton's 300-73210 is a low-heat shrinkable tubing 3:1, self-extinguishing, overexpanded 38.0/12.7 product. This tubing is designed to provide electrical insulation and protection while in use, and it meets various UL VW-1 standards. The plastic material is abrasion, tear, and puncture resistant, and is also flame retardant. It has a 3:1 shrink ratio, meaning that it can shrink 3x its expanded diameter when heated. Additionally, it shrinks uniformly for a secure fit over componerts and wires. The polyolefin material has excellent electrical insulation properties and a low shrink temperature for easy installation. It is perfect for providing strain relief on electrical connections.