Each engineering vehicle has a unique design, 4 different styles. Each toy truck is individually packaged in a color box. Roller, bulldozer, excavator and drilling truck. No batteries, just push to make the toy truck glide. Easy to assemble, And with a handle screwdriver. Use the screwdriver tool to easily assemble the construction vehicle. Equipped with strong plastic screws, not easy to loosen, the toy vehicle can be completely disassembled, the screws removed, and reassembly with a screwdriver. suitable for indoor and outdoor, and can also be used as children’s beach toys. Suitable for children over 3 years old. Take apart toy truck and put it together. The child’s hands-on skills are improved in the process. Enhance fine finger skills, color recognition, counting skills, and cognitive processes. Made of durable non-toxic plastic and high quality materials, smooth surface and edges, not sharp, no burrs, will not hurt children’s hands. Durable, can withstand falling, collision, lasting safety. Comply with EN71, ASTM, CPC, HR4040 safety standards.