Features:This trailer plug with 3 pins and socket is suitable for European standard trailers; the connection between the vehicle and the additional trailer, and the electronic signal light is transmitted from the vehicle to the trailer.The spring-loaded flip locks the 3 sockets when in use, protecting the connection when not in use, and the 3-pin plug has a silicone waterproof rubber seal.Insert this small adapter into a 3-pin plug, then connect the standard 3-pin socket. Suitable for automotive, trailers, boats, for cars, trucks, agricultural machinery, winter service vehicles, and work with the caravan.12V 3-Pin power plugs and sockets with 2 mount points can easily replace damaged parts. It can refer to the chart on the Internet reconnected.Silicone waterproof rubber seals, thermoplastic housings prevent rust or corrosion to ensure long-term service life, and make a lot of replacement certification for your old and damaged plugs. Specifications:Material: Plastic+MetalSize: Approx.2.6x8.4x2.8cm/1.02x3.30x1.10in Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1pc 3-Pin Plug