The Mould King Engineering crawler excavator offers a challenging building project for anyone passionate about mechanical construction vehicles. This detailed model consisting of 840 building blocks impresses with its functional design. Integrated gears allow the mechanical arm to be raised and lowered, and the bucket to be tilted precisely. The entire upper carriage is rotatable and sits on a functional crawler chassis. This set vividly conveys mechanical construction principles and is ideally suited as a display piece for any collection.