12 cylinders : wood, coloured lids ; ; 8x3 cm. + 2 wooden boxes 10x13x10 cm
Summary
Each cylinder when shaken makes a different sound, ranging from loud to very soft. The sounds in the red set match their counterpart in the blue set. Sets support the Montessori method of education
Notes
Each box contains 6 cylinders, numbered 1-6 on bottom. One set has red tops; one set has blue