Students build four wooden machines and bring them all to life with hydraulic power! Each model – a platform lifter, cherry picker, excavator, and scissor lift – mimics prevalent machinery in the engineering and manufacturing industries, giving students insight into the powerful advantage of real hydraulic systems. Students learn as they witness pieces come together to form working models, then perform interactive experiments to discover how they can make their machines move! Kit includes pieces to build four models, glue, and instruction manual. Recommended for Elementary and up. CHOKING HAZARD (1). Not for under 3 yrs.