Racket Guide: Grip Size Tennis Only Find Your Tennis Racket Grip Size Guide With Visuals Tennis Racket Grip Size Guide at Richard Peay blog How To Measure Your Grip Size For A Tennis Racquet at Matthew. Remember the water fights of your childhood? Well, with SpyraThree you can switch to a war machine like paintball but with water for maximum fun! The SpyraThree is the most powerful model in the entire Spyra range (no compromises). The power and range of the spray to start with: that's the most important thing. You can reach your target up to 10 to 15 metres (in powershot mode).