Tubes are made from aluminum, durable and corrosion resistant.This wind chimes produces very clear tunes when wind blows.Hand the wind chimes in your garden and enjoy the melody this wind chime brings to you.No matter where you hang it, in your garden, balcony, patio or in your room, the wind chimes would add simple beauty to the place.It can be a great gift for family and friends, on happy days and holidays , anywhere you wish to add beautiful melodies to your environment.* 18 Tubes* Material: Aluminum Alloy + Wood* Quantity of Tubes: 18pcs* Length of the Tubes: 4.13"/ 10.5cm(min.)~10.83"/ 27.5cm(max.)* Tube Diameter: approx. 4.72" (12cm).* Total Length: approx. 35.43"(90cm).