Descriptions : Black Heat Shrink Tubing 31.8 mm Shrinkage Ratio 2:1 Tube Sleeving Kit Supplied internal diameter : 31.8 mm minimum Fully shrunk internal diameter : 15.9 mm maximum Length : 1.22m Colour : Black Shrinkage Ratio : 2 : 1 (will shrink to half its supplied diameter) Wall thickness (when fully shrunk) : 0.8 mm approx. Material : Polyolefin Minimum Shrinkage Temp : +70 C Full Shrinkage Temp : +110 C maximum Operating Temperature : -55 C to +125 C Tensile strength : 10.4 Mpa Dielectric strength : 15 kV\/mm Manufacture specification : ISO9001 Flammability : Flame Retardant Approvals : UL Approved Supplied format (round or flat) : Product is supplied flat Cutting method : Scissors or sharp knife Package Includes : 1 x Heat Shrink(31.8mm) Detail pictures :