The B33-250-2-342 is a PermaSleeve® heat shrink marker used for wire identification and insulation. It is made from a durable, irradiated polyolefin material with a 3:1 shrink ratio and is compatible with thermal transfer and dot matrix printing. This 1/4" sleeve is designed to fit wires with diameters ranging from 0.094 to 0.215 inches. The material has a wide operating temperature range of -55°C to +135°C and is qualified to military specification SAE AS23053/5 (Class 4). As a UL Recognized Component, it provides reliable, permanent marking for various wire and cable applications.