Includes four small models: helicopter, hydroplane, airship and airplane Each item contains 13-19 parts Kit contains all required components and no glue is required Precision laser cut plywood. Only requires assembly. UGears Mechanical Models are self-propelled, mechanical wooden model assembly kits. Perfect for family projects, puzzle enthusiasts, and hands-on STEM learning 62 parts Assembly time: 10 min Model size Helicopter (15 pcs) 32x44x52mm Model size Hydroplane (19 pcs) 53x35x59mm Model size Dirigible (15 pcs) 18x33x73mm Model size Airplane (13 pcs) 62x37x64mm Ugears Fidgets-Aircrafts: Helicopter, Hydroplane, Airship, Airplane Models Size: 3,2*4,4*5,2 cm / 5,3*3,5*5,9 cm / 1,8*3,3*7,3 cm / 6,2*3,7*6,4 cm Package size: 3,9*3,0*0,6 in (10*7,5*1,6 cm) Number of components: 13-19 depending on a model Estimated time for assembly: 1 hour The unique set of 4 individual miniature models for self-assembly for grown-ups and kids from 5 years old to 80 and beyond. The set includes Helicopter, Hydroplane, Airship, Airplane with basic elements of mechanics. The models aremade entirely from high-grade wooden materials. All component parts are already cut off and can be easily removed from the board. The model assembles easily like a puzzle without glue, toothpicks and special tools by following an illustrated color manual. Use them to organize your thoughts and ideas, drive new insights, relieve stress and to regain control over your emotions. Each model has an eyelet for hanging. Let them become your everyday life companions as key-charms or original trinkets. Also it’s a great welcome gift to your beloved or a compliment to your friends and colleague