Transform your truck's 7-way round pin connection to a 7-way flat pin connection with the durable and weather-resistant plastic construction of the Buyers Products 7-Way to 7-Way Trailer Connector Adapter. Keep your connectors secure and dry with the convenient spring-loaded door. Never worry about mismatched connections again as this adapter effortlessly converts a 7-way flat pin to match your truck and trailer hardware. Plus, the pre-wired 3 in. connection and built-in latch/protective cover make it a must-have for any hauling needs.