Fiskars 750620-1001 IsoCore 10 lb Sledge Hammer, 36 Inch Ideal for demolition work like shattering concrete (demolition face) or driving stakes and wedges (driving face) Wedged demolition face concentrates force for up to 5X more destructive power than traditional designs and directs debris to the sides, not back at you Extra-large diameter driving face improves strike accuracy Patented IsoCore Shock Control System absorbs strike shock and vibration to reduce the punishment your body takes, transferring 2X less shock and vibration than wood handles Lifetime warranty