About This

• DIY assembly: Complex wooden mechanical assembly, featuring precisely cut fragments, which are combined together to create charming dynamic sculptures. Requires 2 AA batteries (Not included)
• MECHANICAL DESIGN: Complex gear system and track mechanisms work together to create smooth marble movement through multiple pathways and levels
• Educational value: combining engineering, physics and problem-solving skills, while providing attractive architectural experience for adults.
• CONSTRUCTION QUALITY: Made from high-quality wood materials with precisely cut components that ensure proper fit and smooth operation
• DIMENSIONS: Features multiple levels of track with an innovative gear system, creating an impressive display piece once assembled