Abstract: An improved mail box support device comprised of an arm having a first and second end with means to support a mail box at the first end thereof and having means at its second end to be rotatably mounted on a shaft supported on a post, the arm being bent at an angle near its second end and the shaft extending from the post at the same angle as the arm is bent so that when the mail box is struck by a moving object, it rotates out of the moving object's path.