The Power Products 100' Roll GPT Primary Wire is the perfect choice for any wiring project. Featuring a tough thermoplastic insulation that resists acid, oil and moisture, this wire is designed to last. It meets or exceeds SAE J1128 and SAE J378 type GPT specifications, so you can be sure that it is of the highest quality. With a wide variety of lengths available, you can find the perfect wire for your needs. FleetPride is your First Click in Heavy Duty®.