Product Description Wood and hydraulics combine into a 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. Hands-on learning at its best. Building models decreases stress and increases focus, organization, and spatial and fine motor skills. 10×7.5×2″ box” Ages 8+ with adult interaction.