#head.striker  the striking part of a tool; "the head of the hammer"
  supertype:  striker  the part of a mechanical device that strikes something
  subtype:  golfclub_head  hammerhead
  part:  face.surface
  part of:  hammer  a hand tool with a heavy rigid head and a handle; used to deliver an impulsive force by striking
  part of:  ram  a tool for driving or forcing something by impact

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