This toy is made by eight colorful steel discs and two sticks Teaching babies to recognize different colors Familiar with different timbre by knocking different piano piece Arouse baby's interest in music, at the same time, exercise the baby's wrist flexibility Note:the wooden tap bar head balls' colors are randomly sent. Material:Metal,Wood Package weight:0.337 kg Product size (L x W x H):24.00 x 12.50 x 2.40 cm / 9.45 x 4.92 x 0.94 inches Package size (L x W x H):25.00 x 13.00 x 4.00 cm / 9.84 x 5.12 x 1.57 inches Package Contents:1 x Kid Wooden Musical Toys Hand Knock Xylophone Educational Toys