Features Cross Linked polyolefin tubing is much stronger than PVC tubing and will not burn like PVC; Heat activated adhesive lining provides impervious seal to salt water, oil, acids, and sunlight as well as providing strain relief; Highest shrink ratio – shrinks to 1/3 original size; Shrinks at 257 DegreeF / 125 DegreeC; Operating temperature range of -40 DegreeC to 110 DegreeC; UL 224; Specifications Color: Red; Size: 6″(15.2 cm); Diameter: 3/8″(9.5 mm); Shrink: 1/8″(3.2 mm); Wire Range: 12-8 AWG; Weight: 0.20 lbs; .