LEGO Technic 42121 Heavy-Duty Excavator

LEGO 42121 Heavy-Duty Excavator is a Technic set released in 2021, containing 569 pieces. It builds a tracked excavator with a movable boom, arm, and bucket, a rotating upper structure, and working tracks. The 2-in-1 model can be rebuilt into a tracked tractor with a backhoe.