You need a flat bench and a ez curl bar to do this exercise. This exercise mainly targets middle chest / pecs. To do this exercise lie flat on your back on the bench. Raise the ez curl bar after lifting it above the chest with elbows slightly bent. Lower the bar slowly behind the head stretching the arms. This produces a long stretching. Returning to your original position completes one set. Do this until failure.

Video Demo on how to do Barbell Pullover