If we even know it's in there? Haha
It doesn't have a separate part number, it's considered an assembly with the screw and o-ring that retains it and the press foot.
But we certainly have some, maybe not for sale as coded in the system but you can always drop me a PM
Or ask any other questions about these tools as we do design them here.
Interesting tidbit about this set, that c-frame could hold a fully loaded to the legal gross weight limit 18-wheeler suspended from it, uses an alloy we're pretty sure only we use, and is rev4 or 4th version since 1st making it as impacts become more powerful