This tool is used to screw into the first stage so it can be gripped into a bench vise.
The first stage holder has two different sides one is an LP with 3/8 UNF threads and the other one is an HP with 7/16 UNF threads.
 
If more force is needed, we recommend our heavy-duty first-stage holder which can also be found in our shop.
 
The first stage holder is precision machined from stainless steel.
 
GTIN: 8720828266618