Is there a reason why there are numbers on the top right corner of a toothbrush !

Question:

Is there a reason why there are numbers on the top right corner of a toothbrush package? What do they mean?

Answers:

The meaning depends on the manufacturing company. It usually represents either the size of the head or the toothbrush, or the hardness or softness the the bristles or the age group.

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Is there a reason why there are numbers on the top right corner of a toothbrush !

Is there a reason why there are numbers on the top right corner of a toothbrush package? What do they mean?

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