Heat Shrink Tubing Length 48 In. Inside Diameter Before Shrinking 0.5 In Inside Diameter After Shrinking 0.25 In Shrink Ratio 2 1 Wall Thick Nominal Recovered 0.025 In. Cable Range 6 to 1 AWG Material of Construction Flexible Polyolefin Temp Range -67 to 275 F Max Voltage 600 Color Yellow Resists Puncture Abrasion Splits Mild Acids And Alkalis Standards MIL-DTL-23053/5 Class 1 2 AMS-3636 AMS-3637 UL File No E-39100 and CSA No 38227 Package Quantity 12