It is a 2:1 punch for wire sizes 5/8 to 1-1/4. It is a punch only for 2:1 pitch wire. You also need a closer to close the C shape wire.
This will punch 2:1 or two holes per inch or 21 holes for 11 binding edge. Small wire sizes from ¼ to 9/16 are pressed 3 loops per inch so you need to punch 3:1 for those wires or 3 holes for every inch. 32 holes for 11 binding edge.
The item "21 hand hole punch wire binding machine paper binder puncher" is in sale since Tuesday, March 26, 2019. This item is in the category "Business & Industrial\Printing & Graphic Arts\Bindery & Finishing Equipment\Paper Drills & Punches".nymets1218" and is located in Seaford, New York.This item can be shipped to United States.