This accessory is for use with most types of artificial Christmas trees that have a 1.25 inch diameter center pole. It is designed to increase the distance between bottom tree section branches and floor surface. Pole extension inserts between bottom section and tree stand and will add 6 inch to tree height.Details:GreenFor trees that have a 1.25" (3.175 cm) diameter center poleAdds 6" (15.24 cm) to tree heightSteel