Arrow Line
Parameters Name, Material..., Path..., Show axes, Position, Angle, Scale are general for all objects. They are considered here.
Group Sizes sets the sizes of object. Group Elements defines a design of object. Parameters Slices, Stacks influence quality of object display.

Add arrow line

Sizes:
Top radius: 0.20 Top arrow height: 0.10 Top arrow radius: 0.50 Bottom radius: 0.40 Bottom arrow radius: 0.10
Elements:
Top arrow
Bottom arrow
Material:
Other color		 Arrow style: Stacked
Line
Top arrow
Bottom arrow		 Arrow style: Centered Arrow style: Included Stacks: 3
Slices: 4
Material:
Other color, Transparency