The Phillips 48' Trailer Main with Quick-Change Socket is the perfect solution for your trailer wiring needs. This product offers exceptional corrosion protection with a firm seal. The slim design of the socket ensures a snug fit. In contrast, the waterproof connection ensures your trailer wiring is safe and secure. The socket also features a special grease that prevents corrosion on each module. All components have been 100% factory tested for quality assurance. FleetPride is your First Click in Heavy Duty®.