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Just open and try butterfly racket 801 and compared to my Stiga vortex tube 4 stars racket ....
I original am expecting if a ball is dropped freely on the racket 801, the ball will re-bounce higher than Vortex . But, after test, it is the other way round.
Why?
I original am expecting if a ball is dropped freely on the racket 801, the ball will re-bounce higher than Vortex . But, after test, it is the other way round.
Why?