Stud installer ?

[Amish]

I have stud installer for 3/4-10 and 5/8-11 but I need a stud installer for 1/2-13.
The installer I have are Blue Point ones but I can't find one for 1/2-13. Anyone have one or any input on a 1/2-13 installer
Thanks
I included an image of the installer I already have for reference

 

[Marcm157]

I've always installed (and removed) studs using 2 nuts and a washer.