These heavy duty hole punches have a very sharp cutting
edge so they can go through the thickest book board. A hammer can be used with
them if needed. They will create holes in the sizes 1/8",
5/32", 3/16", 7/32", 1/4" and 5/16". The tool is self
cleaning so no need to pry the paper discs out by hand.
It is perfect for books that you plan to bind with
ribbon or fibers.
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