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Amazon.com : Tecnifibre NRG2 (17-1.24mm) Tennis String Reel (Black) : Tennis Racket String : Sports & Outdoors
Tennis Warehouse Review: Tecnifibre NRG2 vs Babolat XCel Strings | It's another string face off! Tecnifibre NRG2 vs Babolat XCel Which string wins? Watch the FULL REVIEW to find out --> https://youtu.be/hPHyIzyZuJU
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