Vulcan Strength Kettlebells have evolved. No longer do we carry the typical cast iron fitness kettlebell. The Vulcan Absolute™ Training Kettlebell is constructed of Steel, not cheap cast iron. The Patented Absolute design is the most advanced and ergonomic kettlebell on the market. It offers a wider grip than any available fitness or competition kettlebell making it ideal for every variety of kettlebell lifting/training pursuits.