LEGO Technic Volvo FMX Truck & EC230 Electric Excavator 42175 contains 2,274 pieces and builds a Volvo FMX truck with trailer and an EC230 Electric excavator. The truck features steering, an engine with moving pistons and a loading platform; the excavator has tracks, a rotating superstructure, articulated boom and arm, and a bucket. The trailer transports the machine between work sites.