This listing is for the LEGO Technic 42121 – Heavy-Duty Excavator, a detailed and functional 2-in-1 construction set from the LEGO Technic series. The set was recently discovered in an old warehouse, preserved and unopened. A fantastic opportunity for collectors or Technic enthusiasts to add a pristine set to their collection. Set number: 42121 Theme: LEGO Technic Year released: 2021 Pieces: 569 Recommended age: 8+ Condition: Unopened Box condition: Very good overall, with only minor storage wear (see photos for details) Features: Realistic heavy-duty excavator design with functional arm and adjustable bucket 360° rotating upper structure for lifelike movement 2-in-1 build: Rebuild into a tracked tractor with backhoe for extra building fun A perfect find for LEGO collectors and fans of construction machinery. Will be carefully packed and shipped with tracking to ensure safe delivery.