Strength Training Kettlebells ranging from 5 to 80 Lbs. Cast Iron Kettlebell. Why choose our Cast Iron Kettlebell?. Sport/Activity: Strength Training,Cardio,Full Body Workout Features: Ergonomic Handle,Portable,Corrosion-resistant,Flat Bottom Design,Wide Handle,Heavy,Solid Construction Set Includes: 2 Kettlebells Item Weight: 5 lb.