1、Cognitive Training: Double headed sand ball exercises children's cognition and ability of learn musical instruments. The sound is clear and pleasant so it promotes children's auditory perception 2、Appropriate Size: The sand ball size is carefully suitable for the child, so children are easy to grasp it , and you can cultivate the fun of hands on play from an early age. 3、Material: The wooden sand hammer is made of environmentally friendly birch and plastic materials, which are safe and healthy. It is wear resistant and the playability is stronger. 4、Scene: The sound of the sand hammer is clear and simple, and it makes a fine gritty sound when shaking. It can also be placed next to the baby's small ear and gently beat the rhythm, so that your baby can feel the ordinary sound. 5、Application: The wood hand shaker is fit for families, kindergartens, parent child parks, dance classes and other places where babies and children learn dance and music. 2 x Wooden Sand Hammers Item Type: Wooden Sand HammerMaterial: Birch, plasticProduct length: Approx. 14cm / 5.5inProduct diameter: Approx. 4.5cm / 1.8inApplicable: Families, schools, kindergartens, early education centers, music training cApplicable: Families, schools, kindergartens, early education centers, music training centers, etc.Uses: Percussion instruments cultivate children's hands on ability, train thinking and stimulate imagination.