SIRENXI 3IN1 Model Kit Hydraulic Mechanical Arm DIY Assembled Hydraulic System Science Experiment Set Engineering Puzzle Mechanical Design Engineering Toy Set Children Education

Material:Plastic Size:40.529.510.5cm(15.9411.614.13in) Package Includes:1 Set Hydraulic Mechanical ArmColor:Blue/Yellow Type:Hydraulic Mechanical Arm Description [3-in-1 Function] The Robotic Arm Edge Kit can freely change the working head: grasper, grab, suction cup.So that the operating lever can easily control various ioint activities of the mechanical arm, [Hydraulic Power Principle] The toy does not need electricity and a motor, as long as water can drive the mechanical arm. Explore the Magic and Fun of Hydraulic Power [Safe ABS Material] The hydraulic arm edge kit is a construction toy that is made of high-quality ABS material, BPA-free, non-toxic and safe, harmless for kids. [STEM Educational Toys] The STEM educational toy is designed to improve children's science, technology, engineering, and math skills, which trains children's logical ability and practical with ability and explores scientific principles. [Surprise gift for kids] Robotic arm gripper installation kit is a highly recommended holiday gift. We provide instructions for use. Each step is explained in detail in the instructions, and it is easy for children to understand the assembly.