The Tasker GTB 12663 BK is a heat shrinkable, glueless, 2:1 polyolefin sleeve designed for use in cable repairs, wire harnessing, and strain relief systems. It is 126mm in length and black in color. The polyolefin material is resistant to water, oxidation, UV light, and other atmospheres. Its heat shrinkable construction provides flexibility, abrasion resistance, and durability. This part is ideal for use in electrical and electronic applications, including potting, strain relief, and insulation.