What is THIS?

The neighbor had a yard sale.

I found this gadget....

Can not figure out what it is?

Can YOU?

 I will help out a bit by eliminating a few things I thought it was for:

It does not hold potted plants very well.

 I could make the triangle ring,

but the shape did not help out to much.

 I could not crush any rocks with it.

 It doesn't hold the fence up. Matter of fact, it will pull

a fence down. The cast Iron it is made of is quite heavy.

Poncho was only mildly interested and Libby showed no interest at all.

 It is not very good for a trailer hitch.

 Nor for holding a bike rack together.

 You could hang it on the wall,

 or from a turkey cooker....

 It will roll from a door handle,

 It not very good at hanging from your pocket

 or holding your keys.

 It is not very useful as a post holder,

 It is not very good at pulling roots out of the ground either.

 Can't hold a gate closed.

 And as for a dog toy,

they could break a tooth!

So If any of you know what this is, 

feel free to let me know.

IF

You are right,

(cause I think I know what it is)

I will send you something very nice!