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Although the actual specification may vary according to the manufacturer, the general designation concepts are the same. The U and G is commonly used by Yonex.

The U specifies the weight of the racquet. The lower the number, the heavier the racquet. 2U, 3U, and 4U racquets are common.

The G specifies the grip size. The higher the number, the smaller the grip size. G3, G4, and G5 racquets are common.

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Q: What are 3U and G4 in badminton racquet?
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