Brand new This Aluminum Anti-theft Lock is designed to keep your container trailer, RV, 5th wheel, or camper trailer safe and secure. Helps Deter Theft By Locking King Pin; Quick and Easy to Use With a Flange-Mounted Round shape and Orange color, this Infinity brand lock is a must-have for any trailer hitch type. The king pin lock is specifically made to secure 5th wheel Trailer Containers with internal diameter 2-9/10 inches. This easy-to-install Anti-theft Lock comes with Two Keys Keep your trailer safe with this sturdy, durable, and reliable lock from Infinity. Kingpin lock halts theft of big rigs or RV trailers by blocking the kingpin from linking with a 5th wheel. The trailer connection is impossible when locked, as the durable steel lock fully secures the kingpin. Color: Orange Weight: 12oz Size: 3-1/4" x 3-1/2" HxD Internal Diameter: 2-9/10 Inches inclueded 2 keys Same keys available