Question:

My tennis racquet says "Stiffness Ra: 64". What is Ra, what does it stands for?

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I have a Dunlop Aerogel 300

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  1. I think it means either Ratio or Rating, but it's more likely "Stiffness Rating" :)


  2. I think it stands for rating .... of course 64 being how stiff the racket is ....

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