Shower Caddy Connectors by Better Houseware Each suction cup has a special notch on the top that holds the side bar of the shower caddy. Shower Caddy Connectors Features Each suction cup measures 1 inch H x 1.5 inch D. Also included is a 1 inch c shaped piece that fits the pipe that holds your shower head. Your shower caddy sits on this rubber piece to prevent it from sliding. Included in the kit are two large suction cups.