Beam is PATENTED, extremely durable, safe, easy to assemble, space-saving and able to lock the wheel chock in a ‘click’. Beam is provided with a double safety mechanism that prevents the wedges from slipping when the vehicle is in motion. The first safety lock is placed on the central body of the product, and the second is the snap closure at the end of each element. A third optional security mechanism is also available: a cotter pin, which can be easily placed in the hole at the end of the product.