DescriptionThe lovely shape design and exquisite workmanship simulationassemble and nut combination toy is made of superior materials, which are safe and durable toplay. Suitable for mom and dad to play with children, parent-childinteraction enhances feelings. Perfect gift for kids, they will love it.Features- Color: As shown. - Material: Wood. - Size: 3.50X3.50X3.50cm/1.38X1.38X1.38inch. - A complete set of simulation tools, complete operating tools, exercise the baby's hands-on ability. - Simulated learning, hands-on creation, to satisfy the baby's curiosity and desire for hands-on. - Figure simulation operation, the baby can do it all, and achieve the baby's engineering dream. - Install the nut, rotate it manually, let the baby observe the gear linkage. - Irregular edges and corners are polished to ensure no edges and corners and protect the baby's tender skin.