Do Professional Players use 3U or 4U Badminton Rackets?

When it comes to professional Badminton player's rackets, a lot of people are really interested in if they use the 3u or 4u version. Most Badminton rackets will come with these different versions, they are exactly the same as one another except the 3u version weighs more than the 4u. In this video, I will be looking at what weighted Badminton racket some of the professionals use as well as what I think they have.
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