Family Interaction: Toys that effectively promote parent-child interaction, help strengthen the relationship between children and parents. Leave beautiful childhood memories for children. Material: Made of high-quality metal and plastic, with excellent anti-collision and impact resistance, durable. Rounded edges, no burrs, will not hurt children's hands. The surface is made of water-based paint, which is non-toxic, tasteless, safe and environmentally friendly. Educational: This toy has a great effect on developing children's brain capacity, hands-on ability, cognitive ability, color discrimination ability and hand-eye coordination ability, improving their curiosity, exercising their logical thinking ability, thereby expanding their knowledge noodle. Rich choices: There are many styles to choose from, which can meet different needs. Link them together, place them on wooden rails and push them to go fast! Size: 33.5*3.6*4.9cm