SuoANI Solid Cast Iron Kettlebells Exercise Kettlebell,Weight Training Equipment Workout Equipment Gear $125.02 – $512.54 High-quality material construction: made of strong built-in cement iron sand without welds, weak points or joints Ideal for indoor and outdoor training Design-smooth and sturdy structure with matt black design for easy weight recognition Ideal for any age or gender: The wide weight range is ideal for anyone who wants to improve fitness.