Interlocking Wheel Chocks That Can Be Used as a Tandem Wheel Chock Ensuring the movement of parked heavy vehicles stays at a halt is really important for preventing accidents. Heavy trucks and trailers can roll back or forth and that is where chocks come into play. These heavy-duty chocks have been manufactured using high-grade HDPE plastic which is durable and resilient to weather attacks. Unlike rubber chocks that can degrade with time and can be less reliable. These wheel chocks can either be used singly or interlocked to create a tandem wheel chock for large heavy-duty vehicles. The chocks are grooved to reduce weight and are light enough to be carried by a single person and stored with ease. Features and Benefits Durable and lightweight HDPE plastic Can be interlocked as tandem wheel chocks Resistant to sunlight, water and temperature Can be used singly or in interlocked mode