1、Durable: Plugs are made of premium materials, durable, able to withstand high pressure, waterproof, and able to maintain a secure connection in harsh weather or road conditions. 2、Function: This 7 pin round male plug to 7pin female flat socket adapter is used to convert your existing trailer plug easily. It connects trailer and power supply well. 3、Stable Connection: When combined with proper longitudinal control and support, the plug reduces the possibility of loosening due to shaking while driving, providing a more stable connection for the user's vehicle. 4、Easy to Operate: The plug is easy to install and disassemble, so that people do not need to spend too much time and energy to locate and adjust, convenient for the use of the owner. 5、Widely Used: Trailer adapter plug is suitable for all kinds of trailer electrical connection tools, can be widely used for Caravan, boat, Trailer.