Thanks Cathy! I will head on over to those links. I finally found out what the group of three are. I found the link below after I was scrounging around in the cargo trailer going through all of the older machines attachments.
I found an identical one a box of Greist attachments and that led me to this site and she explained how to use them and what they are! Whew! I am almost done labeling all of my attachments. Here is the link:
http://www.thesewbox.com/2009/04/att...t-hemmers.html