I "reached out" (as they say today) and emailed Customer Support at Zerostart and today got the following reply:
"Hi,
That part number was obsoleted from our system 15 years ago. There won’t be an application for that anymore.
Thanks,
Audrey Morschen
Customer Account Representative
Phillips & Temro Industries"
So there you have it, the folks that made it don't even know what it's for, anymore! LOL!