Heat Shrink Tubing size chart The 4:1 shrink ratio perfectly suit odd or big parts of military, aerospace, and electronic instruments. Feature: 鈼?Shrink Ratio: 4:1 鈼?Material: Crosslinked polyolefin 鈼?Flame-retardant 鈼?Halogen Free 鈼?RoHS Compliant 鈼?Reach Compliant 鈼?Resists water, moisture, high temperature, and humidity 鈼?Easy and quick installation 鈼?Colors: Black. If you have special need,...