Wood and hydraulics combine into a robotic kit that can be built in an hour—an exciting hands-on exploration of hydraulics. Everything you need to build includes Precut wood pieces, plastic hydraulics, and easy-to-follow instructions. Hands-on learning at its best. Building models decreases stress and increases focus, organization, and spatial and fine motor skills. 10x7.5x2" box" Ages 8+ with adult interaction. A great gift that will bring all ages together for a project. Back to school DIY kit, engineering kit, wooden craft kit. These DIY wooden craft engineering kits do well in many retail sites: childrens museum, toy store, hobby store, science museum store, gift store.