Building Blocks help kids to build confidence, perseverance, and arming kids with the real-world, early STEM-supporting skills necessary to prepare them for future success. 4 individual boxes packed into one display box, each set has 2 different modes. And all pieces can be combined into one big armored car. Kids can create more innovative combinations by their imagination and creativity. Police Car 125pcs, Bulldozer 115pcs, Reconnaissance Vehicle 112pcs, Anti-explosion Truck 124pcs. Each box includes an easy-to-follow detailed instruction for clear assembly. ABS high-quality environmental protection plastic building blocks, fully meets the US safety requirements for toys. Suitable for kids 6-12 years old and block-lovers. This building play set is perfect gift for children, in Christmas, birthday, home celebration etc., it would bring tons of joy, smiles, and fun to your little one!