These round items have been posted here many times with no positive ID .
Although it was suggested they were for window shade rollers there was never any proof of that.
Here is one post..
http://www.treasurenet.com/forums/what/169699-no-idea-one.html
And here is the picture that shows them as shade roller ends.
Although it was suggested they were for window shade rollers there was never any proof of that.
Here is one post..
http://www.treasurenet.com/forums/what/169699-no-idea-one.html
And here is the picture that shows them as shade roller ends.