The bathtub bar that locks to the side of your tub allows for you to get in and out of your tub.  It has a crank-style, locking device that attaches to tub walls up to 7" wide.  The unit is 6" wide and extends 14" above the tub wall.  It is equipped with rubber pads to protect the tub walls and weighs only 12 pounds.  250 pound weight capacity.