Installing bathtub grab bars is a smart safety measure whether or not a member of the household is elderly or disabled. Grab bars provide extra support in areas that are known for accidents such as the bathtub and other slippery locations. It has a crank-style, locking device that attaches to tub walls up to 7inches wide. The unit is 6 inches wide and extends 14 inches above the tub wall. It is equipped with rubber pads to protect the tub walls and weighs only 12 pounds. 250 pound weight capacity. All coated steel design for durability.