Our 21" Picturesque Sonnet Chimes feature powder coated aluminum construction and UV printed tubes with industrial cord. 4 heavy walled tubes that emit gentle tones that are pleasing to the ear. 3/4"" Diameter Tubes – Adjustable Striker Chime Tubes Read: "Hear the wind and think of me, in your heart I'll always be" L: 21" W: 4"