LEGO Set LEGO® Technic 42121 Heavy-Duty Excavator:LEGO® Technic 42121 Heavy-Duty ExcavatorLearn how an excavator worksDig holes and move heavy material. Check out the drivers cabin, rotate the body and move the arm just like on a real excavator.For builders young and oldLEGO® Technic features precise down-to-the-detail design, high functionality and models that are 100% mobile once completed.Have fun with the 2-in-1 modelWhen you are ready for an exciting new challenge, you can rebuild the excavator and turn it into a cool tracked tractor with a backhoe.569Pieces8+Recommended ageInstructionsincluded in the packageLEGO® Technic 42121 Heavy-Duty ExcavatorThe LEGO® Technic 42121 Heavy Duty Excavator will delight all fans of construction equipment. With the movable arm and shovel, plus the running belts and rotating body, there is so much fun for kids to discover.Great 2-in-1 designThanks to the well-thought-out 2-in-1 design, you can convert the excavator into a tractor with backhoe. The tractor also has a movable arm and shovel.LEGO® TechnicLEGO® Technic kits are designed for more experienced LEGO® builders. Advanced models feature moving parts—a dream come true for lovers of engineering and technology.LEGO® Technic 42121 Heavy-Duty Excavator Key FeaturesFor younger builders and anyone interested in engineering and technologyDevelops creativity and supports imaginationHelps practise fine motor skillsA gateway to the world of moving machines and modelsExceptionally high-quality playset2-in-1 modelPackage contents:569 pieces for assembling the LEGO® heavy-duty excavator or the tracked tractor with backhueFour cones for managing the building siteInstructionsExcavator dimensions:23 × 37 × 11cm