The 553-50078 is a ShrinkTrak heat shrinkable marker designed for identifying wires, cables, and other components. Constructed from white, cross-linked polyolefin (PO-X), it features a 3:1 shrink ratio, allowing it to cover a wide range of wire diameters. This thin-wall tubing has a pre-shrunk outside diameter of 0.125 inches and operates within a temperature range of -55°C to +135°C. Supplied in a flattened, ladder-style carrier system, these labels are optimized for easy printing with thermal transfer printers. These markers are intended for indoor use and comply with UL, MIL-STD, and SAE flammability and performance standards.