Uxcell Dual-Wall 3:1 Adhesive Lined Heat Shrink Tubing, 4' Length, 12.7 mm, 1/2" Country of Manufacture: CHINA; Brand: DMiotech; Material: Polyolefin Net Weight: 34g; Package Content: 1 x Heat Shrink Tubing; Main Color: Black Ratio: 3:1; Flat Width: 22mm/0.87inch (before shrinkage); Round Diameter: 12.7mm/1/2" (before),4.7mm(after) Thickness: 0.6mm(before shrinkage),1.6mm(after shrinkage); Shrink Temperature: 80C; Fit for: Appliance/Auto Wire Harness Each Length: 1.22M/ 4ft; Temperature Range: -55C to +125C