Snell divided its My Tour Ball’ range into MTB Red and MTB Black a few years ago. The MTB Red had a much higher spin rate and firmer feel than the MTB Black. However, many golfers felt that the Snell MTB Red Golf Balls had a spin rate too high for optimal play. This is why Snell released a refined version of the MTB Red which had all of the benefits and none of the problems: the MTB X.