Wood and hydraulics combine int this robotic kit that can be built in an houran exciting hands-on exploration of hydraulics. Everything you need to build includes Precut wood pieces, plastic hydraulics, and easy-to-follow instructions. This exploration of hydraulics is hands-on learning at its best. Building models decreases stress and increases focus & attention span, 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.