This 116-piece building set allows you to create moving machines. Key Features: Feature 1: Simple play that even young children can enjoy. Feature 2: Experience the excitement and sense of accomplishment as the assembled gears move all at once when you turn the handle. Feature 3: Develop critical thinking and problem-solving skills through play. Feature 4: Build in both 2D and 3D, fostering imagination. Feature 5: Experiment with different arrangements to create completely different movements. The possibilities are endless! - Brand: Learning Resources - Model Name: Machines in Motion Building Set - Number of Pieces: 116 pieces - Age Range: 5 years and up - STEM Education: STEM Thank you for viewing.