Ron Yu on Twitter: "Can't believe I'm already stringing more of these so soon. #GOATneversleeps https://t.co/as3mRZjRjA" / Twitter
![Got my racket strung at a new place. What are these and do they have an effect on how the racket feels? | Talk Tennis Got my racket strung at a new place. What are these and do they have an effect on how the racket feels? | Talk Tennis](https://i.imgur.com/CJoOHur.png)
Got my racket strung at a new place. What are these and do they have an effect on how the racket feels? | Talk Tennis
![Roger Federer of Switzerland waves after defeating Nicolas Kiefer of Germany in the semi final at the Gerry Weber Open ATP tennis tournament in Halle June 14, 2008. Federer beat Kiefer 6-1 Roger Federer of Switzerland waves after defeating Nicolas Kiefer of Germany in the semi final at the Gerry Weber Open ATP tennis tournament in Halle June 14, 2008. Federer beat Kiefer 6-1](https://c8.alamy.com/comp/2E77WGT/roger-federer-of-switzerland-waves-after-defeating-nicolas-kiefer-of-germany-in-the-semi-final-at-the-gerry-weber-open-atp-tennis-tournament-in-halle-june-14-2008-federer-beat-kiefer-6-1-6-4-reuterswolfgang-rattay-germany-2E77WGT.jpg)
Roger Federer of Switzerland waves after defeating Nicolas Kiefer of Germany in the semi final at the Gerry Weber Open ATP tennis tournament in Halle June 14, 2008. Federer beat Kiefer 6-1
![Rob Koenig on Twitter: "Check out the "Power Pads" dampener used by Federer....#VibrationDampener. What's your 'catch phrase' for them? https://t.co/HbQVDZJDM5" / Twitter Rob Koenig on Twitter: "Check out the "Power Pads" dampener used by Federer....#VibrationDampener. What's your 'catch phrase' for them? https://t.co/HbQVDZJDM5" / Twitter](https://pbs.twimg.com/media/CUGjUYjXIAA9mtm.jpg)