Description: This is Electric Six-axis Flying Chair, Self Assembly Building Pieces & Science Experiment. Following the instruction to assembly Pieces step by step carefully. After finished the model , please install 1 Piece AA R6 Battery, the flying chair will rotate. Perfect gift and DIY hobby for friends, kids and adults. Material: Plastic Specification: Finished Size(WxH): Approx. 18x10cm (7.09x3.94inch.) Diameter: 16cm / 6.30inch. Package Includes: 1 Package DIY Building Model Six-axis Flying Chair Note: The Model is a Non-finished Product, and Need You to Assemble it by Yourself. Please Allow 1-3mm Error Due to Manual Measurement