page_title: Hammer
hierarchical_section_title: Hammer
caption_attribution_description: Army 1st Lt. Jason Hobson strikes a 300-pound tire with a sledgehammer as part of a 20-minute Tabata cross-fitness training program at Forward Operating Base Mahmudiyah, Iraq, May 17, 2009. (U.S. Army photo by Sgt. Robert Jordan, Army 1st Lt. Jason Hobson strikes a 300-pound tire with a sledgehammer as part of a 20-minute Tabata cross-fitness training program at Forward Operating Base Mahmudiyah, Iraq, May 17, 2009. (U.S. Army photo by Sgt. Robert Jordan, North Carolina National Guard)
context_page_description: A hammer is a tool for putting nails into objects such as wood. It has a long handle, and a tip with a flat end for hitting nails. The most common type of hammer has a curved end for pulling nails out.
  A sledgehammer is a hammer that has a longer shaft, and a more massive head. The user can swing it with two hands and apply more force.
context_section_description: A hammer is a tool for putting nails into objects such as wood. It has a long handle, and a tip with a flat end for hitting nails. The most common type of hammer (sometimes called a claw hammer) has a curved end (on the other side of the hitting end) for pulling nails out.
  A sledgehammer is a hammer that has a longer shaft, and a more massive head. The user can swing it with two hands and apply more force.
caption: Swinging a sledgehammer
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