Size: 3.8cm.Inspiration for Creativity and Stress ReliefIt is mainly suitable for creators, makers, thinkers and anyone who wants to unleash their inner creativity and imagination. Also for restlessness, autism, depression, anxiety, ADHD, staying awake and other attention disorder issues, such as nail chewing, smoking, leg tremors, etc. .High QualityMaterial is made of monolithically cut and polished high quality imported aluminum alloy. Each piece condenses our vision to bring a better life to customers.Simple DesignRepeated thorough and meticulous practice, when using the correct force and movement, it automatically flips forward through inertial kinetic energy. The number of flips depends on your technical skills. Can also be rotated on a horizontal plane. Unlock more interesting gameplay and enjoy hours of fun.Practice hard The number of knockdowns depends on your technical skills. There is an old Chinese saying that one minute on stage is ten years of work under stage.Novelty Gift Want to surprise someone? We believe our toy can be a Christmas gift idea, New Year gift, birthday gift or other festival gift. When you show and perform skillfully in front of your friends, it's definitely a beautiful landscape.