Feature 1Available for 713Pin Plug: Screw this dust plug adapter holder onto the trailer, after parking the trailer, plug in the 13 pin plug, 13 to 7 pin adapter, or 7 to 13 pin the hook adapter plugs into the socket. 2Characteristic: This trailer adapter protection holder can be used on bike racks, mobile homes or horse trailers, and it is waterproof and can also keep dust out. 3Protective: Trailer plug holder with locking nose, locks adapter firmly, easy to install, all you need is a wrench(not included), use this plug bracket to protect the copper contacts of the plug from damage. 4Can Be Screwed to The Tow Bar: You can screw the trailer adapter plug holder to the tow bar, really practical and useful trailer accessories, nice choice for you. 5Premium Material: Made of high quality metal and ABS plastic, this trailer connector holder is fire retardant, high temperature resistant, sturdy, not easy to break. Item Type: Trailer Dirt Protection Plug Adapter Material: ABS + Metal Application: Trailer Package List 1 x Trailer Plug Holder