The Rokr 3D Wooden Puzzle Tractor is a mechanical model that's an accurate replica of a real tractor. Powered by a wind-up spring and gears, you can bring this machine to life with the turn of a key. It's an attractive gift and a delightful hobby for model and mechanics enthusiasts.

• Mechanical wind-up spring drive without batteries
• Gears move when wound with a key
• Steering wheel allows direction change of front wheels
• Realistic details including shafts, engine, seat, steering wheel, and exhaust
• Precisely laser-cut pieces
• Pieces are pushed out from plywood, assemble in a sequential manner
• Assembly without the use of glue
• High-quality, safe, and non-toxic materials
• Develops technical thinking, imagination, attention to detail, and fine motor skills
• Perfect gift for all occasions

Difficulty: 4 out of 5 (as per Robotime classification). Estimated assembly time: 5 hours.

Package includes: pre-cut wooden pieces, spring, nuts, winding key, steel shafts, detailed pictorial instructions.

Note: Sandpaper and wax stick required for smoothing some parts and the gear mechanism (not included).

Assembled puzzle dimensions: approximately 23.8 x 11.8 x 14 cm.