Royal Designs SPT-1, 8-foot lamp repair wire, has polarized plugs and is UL Listed to ensure consistency of your installation. Rayon jacket helps to resist abrasion and prolonged exposure to the environment. Our Black lamp cords with DIMMER Switch, blend in with your home or office decor. The Rayon jacket helps to resist abrasion and prolonged exposure to the ENVIRONMENT. Specification: Length: 8 foot Function: Simple to replace old cord, rewire antique lamps. Outer casing material: Plastic Inner material: Copper Color: Black Features: Stripped end for easy wiring Easy to install Polarized UL plugs Rayon jacket resists moisture, abrasion and prolonged exposure to sun