High Quality TXL Automobile, RV, Motorcycle, Truck/Trailer, Bus, Industrial Wire. Superior American made quality, copper conductor with smooth easy strip surface finish and excellent abrasion resistance. Has thermosetting insulation and is suitable for use in high temperature automotive wiring applications, moisture, grease, oil, gasoline, most acids and solvents. Insulation is thick walled chemically crossed link polyethylene, will not melt and has an operating temperature range of -40 to +125 degrees C.