TowSmart Ball Mount Trailer Receiver Lock is designed for 2" x 2" receivers and fits class III and IV receivers ly. It features a 5/8" plated steel hitch pin with a bent end and a secure barrel style lock operated by a convenient push-button mechanism. Made from chrome-plated material, this lock ensures durability and resistance to the elements. The package includes two flat keys and a rubber lock cover to protect the lock from dirt and moisture. This reliable lock is an excellent choice for securing your trailer hitch with ease and confidence. Model Number: 7006500