With the Cortex 12kg Standard Kettle Bell, you'll experience an intense strength and cardio workout, with minimal equipment. Our standard kettle bells use an EnduraCast design, with a heavy duty plastic casing to withstand intense workouts. During a workout, and after use, our standard kettle bells stand upright and stable on a wide and flat base. Whether starting your collection or adding to it, the Cortex 12kg Standard Kettle Bells is an affordable way to achieve a gym quality kettle bell workout at home.