The 3PS-1000-2-BK is a B-342 PermaSleeve® marker designed for wire identification and insulation purposes. It is made from black, irradiated polyolefin material and features a 3:1 shrink ratio. This 1-inch marker is designed to fit a wire diameter range of 0.375 to 0.950 inches (9.53 to 24.13 mm). The tubing operates across a wide temperature range of -55°C to +135°C and is compatible with thermal transfer, dot matrix, and laser printing. Meeting both UL and SAE standards, it provides a durable and reliable solution for marking and insulating wires in demanding environments.