Product Details: The Grote 6" 18-Gauge Male Pin 3-Way Hard Shell Pigtail Adapter Plug is the perfect solution for preventing cables from getting tangled or damaged. This adapter plug is made with high-quality GPT materials for durability and longevity and is easy to connect cables and adapters. It is designed for use with 4" round and oval S/T/T lamps and fixtures. FleetPride is your First Click in Heavy Duty®.