Montessori Sensorial Teaching Toy – Wooden Sound Cylinder Set Includes 2 boxes sound bucket, each box with 6 different sound cylinders filling with different materials; shaking the cylinders, there will be different sounds out. Help develop kids hearing ability and judgment ability about sound intensity Trains kid’s hands grasping ability, concentration and hearing. Great for children preschool kindergarten early learning & teaching aid Material: Wood Box Size (L x W x H): Approx 13 x 9 x 10cm / 5.12 x 3.54 x 3.94inch