Tank trailer is addition to Big Rig. It has special hook to connect trailer with vehicle. Big Rig and Tank trailer is a perfect combination for your collection. The kit was developed using new improved parts. In the process of assembling, you will feel like a designer who makes a car into a real model. Tank trailer is closed by a special mechanism, which allows storing and transporting valuable resources inside of it. It connects to the Big Rig with a hook, which was developed specifically for this model.