The fact that a THULE cycle trailer is durable and easy to resell is not only known to THULE themselves but also a well-known fact among thieves. That's why, THULE created the Chariot Lock Kit. With this small, compact lock set, you can lock your THULE Chariot to your bike, making the cycle trailer and bicycle much more difficult to disconnect from each other. The Lock Kit is definitely a smart thing to have for your Chariot!