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VectorHeads

VectorHeads
is an option for the three-dimensional vector field functions, including VectorFieldPlot3D, that determines whether the vectors will be displayed with heads.
  • The default setting is typically VectorHeads->False.
Needs["VectorFieldPlots`"]
With VectorHeads->False three-dimensional field plots draw with line segments:
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Setting VectorHeads->True adds heads to the lines:
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