1/2"-1/4"D x 4"L, Red, Heat Shrink Tubing, Resists Common Fluids & Solvents, Meets UL 224, 125 Degrees Celsius, CSA C22.2 No. 198.1, 125 Degrees Celsius, Mil-Dtl-23053/5, Class 1 & 2, AMS 3636 & 3637, DEF STAN 59-79, Issue 3 Type 2A, Continuous Operating Temperature: -55 Degrees Celsius, -67 Degrees Fahrenheit, -135 Degrees Celsius, 275 Degrees Fahrenheit, Shrink Temperature: 120 Degrees Celsius, 250 Degrees Fahrenheit, -250 Degrees Celsius, 480 Degrees Fahrenheit, 600V/Mil Dielectric Strength, 2:1 Shrink Ratio.