Size -- This product is suitable for curtain rods with diameters of 26-28mm. Advantage -- The Curtain Rod Brackets is designed of two plastic buckles,not only can help to protect rod but also fix the curtain rod firmly. Material -- Curtain Rod Brackets is Made of aluminum alloy,light weight and ,sturdy and , rust ,ensuring quality and . Usage -- Curtain Rod Brackets Can be used for window curtain rod,drapery rod,door curtain rod,single drapery rod,bracket for curtains holders.