Description: Educational and Fun: This set of Arithmetic Educational Toys is not only a great tool but also an educational toy for those learning mathematics. Helping students practice their math skills while having fun.Material: Made from PP material, these math rotating wheel are designed to withstand hours of , providing a smooth and satisfying experience every time.Compact and Portable: These math rotating wheel are compact in size (approximately 5.5x5.5cm), making them easy to carry around. Whether you're at home, school, or on the go, you can conveniently take them with you for a calming and captivating experience .Development Toys: They are suitable for all ages - whether you're a child needing focus or an adult looking for ways to relax.Unique Design: The Math Rotating Wheel feature unique designs with colorful facts printed on the which adds not only functionality but also visual to them. Whether you collect fidget rotating wheel use them as teaching aids, these Math Rotating Wheel are an essential part of your collection. Specification: Material: PP Size Chart: 5.5cmx5.5cm/2.17inchx2.17inch Package Includes: Optional Package 9 or 18Math Fidget Rotating Wheel Toys Note: 1.This is not infant toy , please take away from children to avoid eating.2.Please allow slightly errors 1-2cm differences due to manual measurement.