Kettlebell Kings | Cast Iron Kettlebell | Designed for Durability & Comfort During HIIT Workouts and Strength Training REVIEWS - Over 100 Five Star Amazon Seller Reviews and thousands 5 Star Reviews Online! LIFETIME WARRANTY, We craft these kettlebells so well we guarantee their structural integrity for life ACCURACY, we guarantee the accuracy to the weight you purchase within 0.3 kilograms or we will replace the bell at NO cost SINGLE CAST, Made from a single piece of cast iron. Most kettlebells have the handles welded on which makes them break easier. Casting from a single piece of metal gives more durability to the kettlebell GRAVITY CAST, The most precise way to create a kettlebell mold. Gravity casting casts the iron to the specific weight you are creating. If a kettlebell is not gravity cast you risk not accurately casting the kettlebell to the same weight and dimensions as the mold ages. SMOOTH FINISH, No Welds, Weak Spots, Seams or Burrs which tear up your skin during workouts on poorly cast kettlebells FLAT BASE, for easy storage and handling