These are 8 Fibonacci Tuned Pipes. Fibonacci Series can help man to understand the world in which he lives in. Fibonacci Series could also be one of the means to solve the daily problems he faces in his everyday living.These Tuned Pipes follow the number series with the first fork being 1/1, followed by 1/2, 2/3, 3/5, 5/8, 8/13, 13/21, and 21/34. These pipes are made from High Quality Heat Treated Aluminium Pipes producing beautiful and long lasting sound.Carefully tuned to actual frequency as mentioned.Gives Great healing effect.Dimensions of Pipe-Length – 21 to 30 inches appx,Diameter – 1 inch appx..Packing- 8 Piece Pipe with Rings on each side,1 Wood Hand Stand to hold 2 pipes at one time,1 Rubber Mallet. You can hang these Pipes on Wooden hand-stand with the help of Rings provided on sides of the Pipe.Use Rubber mallet to produce healing sound and frequency.