|Description: Heat shrink tubing made of adhesive lined, flame retardant polyolefin. Features, three to one shrink ratio and shrinks at 250° F ( 120° C). Operating temperature is -67° to 230° F (-55° to 110° C). Works great for dressing a cable end and small sizes can be used instead of a connector boot. Available in black only. Diameter is 1 1/2".