Building Sets by Eitech. Details: Build bridges and cranes with the Eitech Crane Bridge Metal Building Kit! With over 270 parts, this high-quality steel set is the next step in building, perfect for those who've already mastered Eitechs Basic sets. Learn different mechanical functions by building each model. Step by step illustrated instructions are included for easy to follow directions. Begin your building adventures today with the Eitech Classic Crane Construction Set! Build bridges and cranes with the C05 Eitech Crane Bridge Metal Building Kit. With over 270 parts, this high-quality steel set is the next step in building, perfect for those who’ve already mastered Eitech’s Basic sets. Learn different mechanical functions by building each model. Step by step illustrated instructions are included for easy to follow directions. To build a more intricate model, supplement the C131 Professional Gear Set.