Stretching certain part of a sprite (like ui)

I want to have a line with two arrows at each end , and I want to give it an end point and start point and have it stretched between the two point but I don't want to mess up the arrows. I know we can do it by split sprites in ui image but how can I achieve this with sprite renderer?

 

SpriteRenderer cannot be 9-Sliced right now. This is something that will be coming in future updates I believe.

One option is to have 3 sprites, one for each end, and one for the middle. Then either stretch the middle one and reposition the ends to the edges of the stretched sprite, or stretch the middle one to fit between the two ends wherever they are, and then move the ends around. Same effect, it's just which one is dependent on the other.

 

Thank you
I had that idea , I was just wondering if there is an easier way to do this