#box_wrench__boxwrench__box_end_wrench__boxendwrench  a wrench with a closed loop (a socket) that fits over a nut or bolt head
  supertype:  spanner__wrench  a hand tool that is used to hold or twist a nut or bolt
  part:  socket.receptacle  receptacle where something (a pipe or probe or end of a bone) is inserted

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