AUTOMOTIVE PRIMARY WIRE 18AWG HIGH TEMP GXL WIRE BLACK + RED 50 FT EA Automotive Wiring ConstructionPURE STRANDS OF BARE COPPER WIRE.Conductor: Bare CopperInsulation: Cross-Linked Polyethylene (XLPE)Type TXL Automotive Wire Ratings and Approvals:Recommended Temperature Range: -51°C to +125°CVoltage Rating: 50 voltsFord Specification: Ford (M1L-85A)Chrysler Specification: Chrysler (MS-8900)SAE Specification: SAE J-1128