Product Highlights:

335-Piece Challenge - 5-hour assembly for teens/adults (ages 14+)

Eco-Friendly Materials - Laser-cut birch plywood, no glue needed

Working Mechanical Model - Functional track pulley system with marble run

STEM Educational Value - Teaches:

• Gear mechanics
  
• Structural engineering
  
• Problem-solving

Kit Includes:

✔ Pre-cut wooden components

✔ Step-by-step instructions

✔ Decorative display base

Key Features:

• Finished size: 30×20×15cm
  
• Difficulty level: ★★★☆ (Intermediate)
  
• Non-toxic, smooth-edge design

Perfect For:

• Birthday/Christmas gifts
  
• Office/home decor
  
• Model-making enthusiasts

Note:

• Not for children under 3 (small parts)
  
• Includes spare parts for critical components