GSU competition rule. Athlete Classification category.
Men's kettlebell weights: 16kg, 20kg, 24kg, 28kg, 32kg. This includes intermediate weights (20kg, 28kg) not found in the standard IUKL system, which traditionally uses only 16kg, 24kg, and 32kg for men. The 20kg and 28kg bells create stepping stones between the standard amateur (16kg, 24kg) and professional (32kg) tiers.
See the interactive comparison on KETTLEBELL MONSTER™ for filterable views and more detail.