Immaster Excavator Radio Control 3 in 1 (n8038)

Mechanical Master's 3-in-1 RC excavator that lets kids build their own 
vehicle with all 452 pieces. You can assemble 4 radio-controlled vehicles 
that allow you to drive with a remote control. This building toy promotes 
your child's hand-eye coordination, divergent thinking, problem-solving 
skills, inspires creativity and brain development.