Sledge Hammer with Textured Grip, Fiberglass Handle, Overstrike Protection, and Heavy Duty Construction Sledgehammers can help to strengthen the ligaments, tendons, and muscles in the elbow, shoulder girdle, and wrist. For fighters who want to strengthen those areas and boost their explosive power, this is the ideal tool. Sledgehammer brand; alloy steel; item weight; 40,45 kg; color: black