Description: 100% Brand New Color: Black With High Quality Inner Diameter(ID): 1/4" Voltage Rating: 600V Length: 100 Feet (Spool) Shrink Ratio: 2:1 (Shrinks to 1/2 of its original diameter) Highly Flame Retardant Operating Temperature: -55° C to +135° C (-67° To 275° F) Maximum Continious use Temperature: 135° C (275° F) Professional Installation is Highly Recommended Installation Instruction is NOT Included? Fitment: Electrical Insulation, Strain Relief, Cable Bonding, Color-Coding, Wire Marking, Corrosion Protection, Solder Insulation, Wire Bunding & more .