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 6 inches wide. The unit is 6 inches wide. It is equipped with rubber pads to protect the tub walls and weighs only 7.05 pounds. 250 pound weight capacity. All coated steel design for durability.