Description Hydraulic pressure is very often used in the mechanical and electromechanical industry, either as a method of power transmission or as a method of hydraulic control. This item is a set of wood hydraulic lift model assembly puzzle toy for kids. Features - Color:Wood Color. - Material:Wood. - Size: 22.00X0.50X12.00cm/8.65X0.20X4.72in - Realistic appearance and cool design makes it quite prevalent with children. - Selected high-quality natural wood, safe and environmentally friendly, zero pollution, more assured use. - High-quality materials and accessories, only for better quality, safe and environmentally friendly and more reliable. - Learn the principles of simple lifting platforms, knowledge of air pressure and hydraulics. - A classic creative and learning activity! for building and introducing early match concepts. Package list: 1 set x hydraulic lift model toy