[Product Information]

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• Size: 13.70×0.66×2.55 (inch) / 7.5 (oz)
• 1 ball (having a value of five) and 4 balls (having a value of one)
• Because the lightweight and durable it is recommended for children practice. Also， it does not compress the household at an affordable price.
• It is a very popular item with a useful feature that can be reset at the touch of a button.
• Merchants from the mathematics education of small children and students， is a full-fledged products that can be used to businessmen.