WKSF competition rule. Athlete Classification category.
MSEC (Master of Sport Elite Class): Highest achievable rank, only with heaviest kettlebell. MS (Master of Sport): Elite level, only with heaviest kettlebell. CMS (Candidate Master of Sport): Advanced level, achievable with both kettlebell weights. Rank I: Intermediate-advanced. Rank II: Intermediate. Rank III: Entry-level rank.
See the interactive comparison on KETTLEBELL MONSTER™ for filterable views and more detail.