Material: The plant pot holder is made of Iron, anti-rust, thick powder coating surface, hard texture, not easy to deform, very suitable for decorating outdoor or indoor. Size: 4 inches. Package of 3 piece. The holder ring is thick and heavy duty enough, can hold up to heavy flower pot. Easy to Install: Come with screws. It can be installed upside down, depending on your needs. Perfect for Planters: Metal ring holder for a flower pot to showcase your plants or herbs. Simply mount the flowerpot ring on the table or on the shelf and then place the pot inside of the ring, it is just that simple. Note: Please check the size your flower pots before purchasing.