2:1 Thin Wall Polyolefin Heat Shrink TubingNominal Diameter: 1"Flat Width: 1-9/16"ID After Shrinking: .500"Wall After Shrinking: .016"Spool Size: 165 FeetNote: Tubing is always referred to by Nominal ID, not flat width. Flat widths are approximate, and are provided for reference purposes only. Features:• Lower shrinking temperature than PVC, and higher use temperature• Thin Wall for confined/tight spaces• 2:1 Shrink Ratio (shrinks to ½ its original diameter)• UL 224 VW-1 300V and CSA OFT 150V recognized• Maximum Continuous use temperature 125°C• Standard Color: Black• Shrink Temperature of 100°C and operating temperature of -55°C to 125°C• Crosses to : Sumitomo F4, Raychem Versafit V4 (Versathin), LG GSHS-1635T• Typical applications include: Insulation, Wire Identification, Wire Bundling, Mechanical Protection, Lightweight Harnessing, Physical/Electrical Protection of Components, Strain Relief, and Solder Insulation.