GROZ 34600 Indestructible Handle Copper Head Club Hammer 4-Pound Head and 12-Inch Handle. Handle made with four large spring steel bars to prevent breaking during overstrikes. The head will never dislodge as the steel bars are locked with a steel plate to the top of the hammerhead. The head is forged from 99.9% pure copper for spark-free use and to reduce the marring of most struck surfaces. Ergonomic, vulcanized rubber-grip handle absorbs impact and vibration, reducing user fatigue. Grip made from a special grade ozone-resistant rubber for tough outside environments. With textured non-slip grip to help guard against user error. Great for heavy demolition work in construction environments, railroad, metal forming, and underground mining. GROZ Indestructible Handle Hammers meet ANSI specifications "Hand Tools - Heavy Striking Tools Safety Requirements", as well as BS 876 specifications for material, hardness and performance. GROZ makes a wide selection of big and small hammers: sledge hammers, club hammers, engineer hammers, mallets, dead blow sledge hammers, and drilling hammers