Can be used on surfaces where suction cups stick, such as tables, floors, window glass, and car windows. It sticks firmly, making it easy for small children to spin! The edges of the blades are made of soft material. Play enthusiastically to improve concentration! Nurtures curiosity and concentration while playing, and promotes the development of fine motor skills. A set of two, Anpanman and Baikinman. The Anpanman spinner has three blades, and the Baikinman spinner has four blades. Purchased in September 2023. Used on a home window until around the summer of 2024, but no longer needed due to growth, so I'm giving them away. There is some wear and tear, so I will only trade with those who understand that these are used items. No claims and no returns, please.