Isocore, 4 LB, Rugged, Powerful Club Hammer, Allows You To Take On Intense Demolition Tasks While Helping To Reduce Muscle Fatigue Joint Pain, Premium Steel Is Forged Into A Unique Head Featuring A Wedged Demolition Face To Maximize Destructive Force An Extra Large Driving Face For Improved Strike Accuracy, Performance Handle Design Fits Your Hand Securely Comfortably When Swinging With Maximum Force, Strategic Texturing Helps Improve Grip While Reducing Blisters