With its multiple functions, the LEGO Technic 2-in-1 Excavator (42121) is ideal for those who love construction machines. Children aged 9 and up can take on an immersive construction challenge, then explore the realistic details of the excavator. Whether it's a birthday present, Christmas or a surprise present, young construction enthusiasts will love building and exploring the LEGO Technic Excavator Set (42121). When children are ready to take on a new challenge, the 2-in-1 model can be transformed into a caterpillar tractor with a shovel. Rich in realistic features, this excavator allows children to discover how a construction vehicle works. They can explore the moving shovel and arms as well as caterpillars, just like on a real excavator. This amazing excavator is ideal for boys and girls 9+ years old who love construction vehicles. Thanks to its realistic cabin and detailed dashboard, this amazing excavator offers children to imagine life on a construction site. This great set stimulates play. It includes 4 cones to mark the construction site as well as additional LEGO bricks to pick up with the excavator. The excavator measures over 23 cm high when the arm is raised, 37 cm long when the arm is extended and 11 cm wide.