These Expandable Habitat toy hangers come in two different acrylic ball sizes, 1 3/4" and 1 1/4" and a stainless steel hanger. The acrylic ball needs to be bigger than the cage bar spacing and the stainless steel hanger piece will hold whatever you want to hang and then screw into the acrylic ball through the bars and snug against the ball and cannot be done by even the most ingenious birdie! Proudly made in USA.