Feature: 1. Enjoyable DIY: Just enjoy the fun DIY time with your children, which will also better cultivate their interest in science.2. Hydraulic Arm: 8pcs attached syringe can stably drive the hydraulic mechanical arm for flexible movement, no battery needed. 3. Easy Learning: The whole robot arm building block can clear show the robot structure and exercise hands on ability as well. 4. Good Material: Adopting high quality beech wood without painting, the surfaces have no paint, very safe and to use. 5. Ideal Present: Not only is the robotic arm a fun toy, but also an excellent present for your family, friends and loved ones. Specification: Item Type: Robot Arm Package List: 3 x Wooden Board 7 x Bag of Accessory 1 x Sand Stick 8 x Syringe 2 x Hose 1 x Glue 1 x Screwdriver |