Here is another clever kettlebell that replaces multiple sets. The Polyfit Adjustable Kettlebell replaces 5 weights, ranging from 10 to 30lbs. You can change weight in seconds. This kettlebell has a cast iron construction. It has a lock for safe workouts. The Polyfit Adjustable Kettlebell has a non-slip grip. You can use it for one or two handed workouts.
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