115 piece Engineering Construction Building Blocks (SKU: PTN115) inspires creativity and hands-on STEM (Science, Technology, Engineering, and Mathematics) learning. It features 3 tools, including a clickable ratchet, for tightening toy hardware, which enhances fine motor skills and dexterity. With 48 nuts and bolts and 64 versatile block pieces, children can build a variety of structures, promoting problem-solving, spatial reasoning, and imaginative play. Ideal for children aged 3 and up, perfect for both fun and educational exploration.