This durable high security keyed alike king pin lock protects your trailers and their cargo. This lock includes two additional keys. The reality is that trailer theft is quite prevalent throughout the United States and around the world. There are very few secured parking areas available to truck operators, and droped trailers with no locking device are vulnerable to cargo thieves. Many king pin locks are ineffective in preventing a full trailer/container theft. For an effective theft deterant look to Master Lock, the most recognizable and trusted locking company in the industry today. This individual keyed alike lock is purchased in conjunction with a two pack listing, when requiring an odd numbered quantity. Fleet orders are availble. When purchasing even quantities buy as many two packs as needed - available in our Amazon Store (click on our logo), or via the Master Lock link under this pages title. If requiring an odd quantity, purchase as many two packs as necessary plus this single keyed alike lock.