Wilson KFour 112 is a tennis racket with head size 112in² and a string pattern 16x20. The declared unstrung frame weight is 265g, the balance is equal to 365mm and the stiffness is 75 RA.
Wilson ULTRA 100 L v3.0 2020 is a tennis racket with head size 100in² and a string pattern 16x19. The declared unstrung frame weight is 280g, the balance is equal to 320mm and the stiffness is 70 RA.
Wilson Pro Staff 97L v13.0 2020 is a tennis racket with head size 97in² and a string pattern 16x19. The declared unstrung frame weight is 290g, the balance is equal to 325mm and the stiffness is 70 RA.
