Unlike traditional finger inserts installed into a bowling ball, Turbo "Rev" is designed to be worn on the index or pinkie finger. When worn on the index finger, Turbo "Rev" will help create axis rotation for more hooking reaction. When worn on the pinkie finger, Turbo "Rev" will help reduce axis rotation giving you a more even and controlled ball reaction. "Rev" can also be worn to protect your fingers from discomfort caused by excessive friction during release.
Started bowling again after a long layoff. The first time I used this grip there was a noticed hook to my ball and was 40 pins above average the first game. Did not use it the second game and was 15 pins under. Used it the third game and was 60 pins above average.