The TowSmart Baja Collection Steel Bent Pin Barrel Style Receiver Lock and Coupler Lock protect your boats, campers, trailers, and equipment from theft. Each easily secures your ball mount or hitch accessories to the receiver hitch by inserting the pin into the fastener hole once the ball mount or hitch accessory is positioned. It provides a tight and secure fit, and is made of corrosion-resistant materials in a black finish that are designed to withstand extreme weather. The coupler lock secures the trailer to the ball mount when in tow and provides superior protection to the trailer when it is left unattended. Includes weather-resistant dust caps that protect the locking mechanism from moisture. This product is not recommended to remain on vehicles for an extended period of time.