Hydraulic robot arm to build

This DIY kit contains everything needed to assemble a model robot arm that uses hydraulic power to open and close the hand.A basic introduction to the scientific principles of hydraulics is provided for childrenIncludes an instruction booklet and relevant componentsMainly made of cardboardMeasures approx. L 60 cm × W 11 cm × H 3.5 cm when fully assembledRecommended for children aged 8 and upwardsRequires scissors (not included)Packaged in a printed cardboard boxWarning! Not suitable for children under 3 years old. Choking hazard due to small parts. Please read all instructions and warnings carefully before assembling the arm. Some of the metal components may have sharp edges, so adult assistance is required when assembling and using the arm.Material: Adhesive. Card. Foam material. Metal. Stickers. Plastic. RubberProduct dimensions: Width: 11cm. Length: 60x3.5cm. Weight: 34gPackaged product dimensions: Width: 16.5cm. Length: 5.5x21.5cm. Weight: 121g