Total length at 75mm with diameter of 20mm.

This hole punch sharpener allows you to sharpen the punches with ease. Insert the hole punches and move it around in circular motion / turn it to sharpen the external blade of the punch. Turn the sharpener around and using the pointed tip to insert into the internal area of the punch to sharpen/polish the interior of the blade. Smallest punch size that it can sharpen is ~2.5mm in diameter.