Borden Connector

Hey all. I don't know if this has been posted here before or not but I found a place that sells borden connectors. Here's the link http://www.dentalsuppliersofamerica....l?pc=6&pid=123

-Troy

Cool! Those aren't very expensive at all.
Out of the 3 part numbers listed on that page, which one would be needed?

I'm not up on all the names of dental tool components.

I'm guessing it would be the second one, #7040.