DescriptionThrough the DIY way, can trigger the child's imagination and curiosity, can exercise the child's finger flexibility, let the child's fine movements get better development. Discrete and fun, also effective for focus and deep thought.Features-Color:As Shown-Material:Wooden-Size:26.00X8.00X4.20cm/ 10.22X3.14X1.65in -Made of premium materials, safe, practical and durable. -It can easily arouse children's interest in scientific physics experiments. -The product has very smooth edges in result in No scratch injure for kids hand. -Give full play to children's imagination and promote children's intellectual development. -Designed to encourage and promote learning in the crafts world, allowing your kids to enjoy DIY fun.